Properties of the Number -18950

Eighteen Thousand Nine Hundred Fifty

Basics

Value: -18951 → -18950 → -18949

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 ² × 379

Divisors: 1, 2, 5, 10, 25, 50, 379, 758, 1895, 3790

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -100101000000110

Octal: -45006

Duodecimal: -AB72

Hexadecimal: -4a06

Square: 359102500

Square Root: 137.65899897936205

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

This is to A139025 as A139025 to A014688, see A139025 for details. A139026

Let p = n-th prime == 3 mod 8; a(n) = sum of quadratic nonresidues mod p that are < p/2. A282724

Number of n-digit numbers that have exactly 5 divisors. A379568

Number of n X 3 0..1 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor. A201348

Expansion of (f(-x)³ / f(-x²))⁶ - 64·x * (f(-x²)³ / f(-x))⁶ in powers of·where f() is a Ramanujan θ function. A258739

Number of n X 7 0..1 arrays with every element unequal to 0, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero. A304951

Number of partitions of n with equal nonzero number of parts congruent to each of 0 and 1 (mod 5). A35562

Numbers k such that k | 10^k + 9^k + 8^k + 7^k + 6^k + 5^k + 4^k + 3^k. A57283

Number of n X n 0..1 arrays with every element unequal to 0, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero. A304946