Properties of the Number 18481

Eighteen Thousand Four Hundred Eighty-One

Basics

Value: 18480 → 18481 → 18482

Parity: odd

Prime: Yes

Previous Prime: 18461

Next Prime: 18493

Digit Sum: 22

Digital Root: 4

Palindrome: Yes

Factorization: 18481

Divisors: 1, 18481

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100100000110001

Octal: 44061

Duodecimal: A841

Hexadecimal: 4831

Square: 341547361

Square Root: 135.94484175576505

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

Palindromic primes: prime numbers whose decimal expansion is a palindrome. A2385

Primes of form n² + 256. A256776

a(n) = 15n² + 3n + 1. A165806

Numbers n such that p(n),p(n)+6,p(n)+12,p(n)+18 are consecutive primes and p(n)=6·k+1 for some k, where p(n) denotes n-th prime. A90838

Beginning with 3, least member of A007500 such that concatenation of first n terms and its digit reversal both are primes. A111383

Primes having only {1, 4, 8} as digits. A260270

Prime number spiral (clockwise, Southeast spoke). A54564

Smallest prime whose product of digits is 2ⁿ. A89365

Primes that are the average of the members of emirp pairs. A178581

Primes for which the period of the reciprocal equals (p-1)/14. A135073