Properties of the Number 18841

Eighteen Thousand Eight Hundred Forty-One

Basics

Value: 18840 → 18841 → 18842

Parity: odd

Prime: No

Previous Prime: 18839

Next Prime: 18859

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 83 × 227

Divisors: 1, 83, 227, 18841

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100100110011001

Octal: 44631

Duodecimal: AAA1

Hexadecimal: 4999

Square: 354983281

Square Root: 137.26252219743014

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

T(n,k)=Number of zero-sum -k..k arrays of n elements with adjacent element differences also in -k..k. A202252

Expansion of 1/(1 - x*∏_k>=1 (1 - x^k)^k). A299211

Odd numbers n for which 17 is the smallest i (>= 1) with Jacobi symbol J(i,n) getting either a value 0 or -1. A112077

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 94 ones. A31862

Row sums of triangle A115127. A115128

a(n) = n² - 917·n + 9479. A161726

Number of zero-sum -5..5 arrays of n elements with adjacent element differences also in -5..5. A202249

Number of zero-sum -n..n arrays of 6 elements with adjacent element differences also in -n..n. A202256

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 275", based on the 5-celled von Neumann neighborhood. A271093

Expansion of g.f. A(x) = ∏_n>=1 (1 + x^n-1 + x^2·n-1) * (1 + xⁿ + x^2·n-1) * (1 - xⁿ - x^2·n). A370541