Properties of the Number 18913

Eighteen Thousand Nine Hundred Thirteen

Basics

Value: 18912 → 18913 → 18914

Parity: odd

Prime: Yes

Previous Prime: 18911

Next Prime: 18917

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 18913

Divisors: 1, 18913

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100111100001

Octal: 44741

Duodecimal: AB41

Hexadecimal: 49e1

Square: 357701569

Square Root: 137.5245432641025

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 ways to choose a strict partition of each part of a strict partition of n. A279785

Primes of the form m² + 3m + 9, where m can be positive or negative. A5471

Integer part of Gauss's Arithmetic-Geometric Mean M(1,n⁵). A127761

Primes which remain prime after one and after two applications of the rotate-and-add operation of A086002. A86003

Primes which remain prime after one and after two and after three applications of the rotate-and-add operation of A086002. A86004

Smallest prime modulus p such that there exists a multiplicative-coset Ramsey algebra in n colors over Z/pZ, or 0 if no such prime exists. A263308

Primes in A301916 but not in A045318. A320481

Prime quadruples: 2nd term. A136720

Primes p such that A008472(p-1) = A008472(p+1), where A008472 = sum of distinct primes dividing n. A203182

Primes of the form 2·n²+30·n+13. A243889