Properties of the Number 18854

Eighteen Thousand Eight Hundred Fifty-Four

Basics

Value: 18853 → 18854 → 18855

Parity: even

Prime: No

Previous Prime: 18839

Next Prime: 18859

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 11 × 857

Divisors: 1, 2, 11, 22, 857, 1714, 9427, 18854

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100110100110

Octal: 44646

Duodecimal: AAB2

Hexadecimal: 49a6

Square: 355473316

Square Root: 137.30986854556377

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of one-element transitions among partitions of the integer n for labeled parts. A94533

Triangle T, read by rows, where the n-th diagonal of T equals the BINOMIAL transform of the (n-1)-th diagonal of T² for n>=1, with the zeroth diagonal set to all 1's and where T² denotes the matrix square of T. A141712

a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, where m = 2·n - 2 - 2^p+1 and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1 and a(2) = a(3) = 2. A49907

Column 0 of triangle A141712. A141713

Matrix square of triangle T = A141712, where the n-th diagonal of T equals the BINOMIAL transform of the (n-1)-th diagonal of T². A141715

Coordination sequence for MgNi2, Position Ni2. A9932

The number of 2 X 2 symmetric positive definite matrices whose entries are integers x,y,z satisfying x² + y² + z² <= n². A219744

Smallest k such that A002522(k) and A002522(k+2n) are successive primes of the form m²+1. A245463

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 133", based on the 5-celled von Neumann neighborhood. A270234

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 219", based on the 5-celled von Neumann neighborhood. A270932