Properties of the Number -18944

Eighteen Thousand Nine Hundred Forty-Four

Basics

Value: -18945 → -18944 → -18943

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ⁹ × 37

Divisors: 1, 2, 4, 8, 16, 32, 37, 64, 74, 128

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100101000000000

Octal: -45000

Duodecimal: -AB68

Hexadecimal: -4a00

Square: 358875136

Square Root: 137.63720427268203

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

tanh(tan(x)*tan(x))=2/2!*x²+16/4!*x⁴+32/6!*x⁶-18944/8!*x⁸... A9819

Determinants of 5 X 5 matrices consisting of 25 consecutive primes. A118815

Expansion of e.g.f. exp( x - ∑_k>=1 x^{2^k}/2^k ). A374364

Duplicate of A009819. A12392

Maximum sum of products of successive pairs in a permutation of order n+1. A101986

Rhonda numbers in sexagesimal number system. A255731

Number of compositions of n avoiding the pattern (2,1,2). A335473

Numbers of the form p⁹*q where p and q are distinct primes. A179692

Numbers k such that (number of prime factors of k counted with multiplicity) less (number of distinct prime factors of k) = 8. A195092

a(n) = 2·n*(7·n - 3). A316466