Properties of the Number -18618

Eighteen Thousand Six Hundred Eighteen

Basics

Value: -18619 → -18618 → -18617

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 29 × 107

Divisors: 1, 2, 3, 6, 29, 58, 87, 107, 174, 214

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100100010111010

Octal: -44272

Duodecimal: -A936

Hexadecimal: -48ba

Square: 346629924

Square Root: 136.44779221372548

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 T(n,k) of proper k-times partitions of n; triangle T(n,k), n >= 0, 0 <= k <= max(0,n-1), read by rows. A327639

Number of partitions p of n such that (1/5)*max(p) is a part of p. A363068

Total number of inversions in all partitions of n. A271370

Numbers n whose sum of divisors equals the sum of divisors of 2n+1. A272553

Numbers k whose binary expansion contains 2 adjacent 1's and A391571(k) = k. A391581

Indices m such that A128646(m)-1 is prime, where A128646 = denominator of partial sums of 1/(p(i)-1). A137689

Number of n X 4 0..1 arrays with rows, columns and antidiagonals unimodal and diagonals nondecreasing. A223766

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 414", based on the 5-celled von Neumann neighborhood. A272014

Numbers n such that usigma(n) = usigma(2·n+1) where usigma(n) = A034448(n). A286837