Properties of the Number 18049

Eighteen Thousand Forty-Nine

Basics

Value: 18048 → 18049 → 18050

Parity: odd

Prime: Yes

Previous Prime: 18047

Next Prime: 18059

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 18049

Divisors: 1, 18049

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011010000001

Octal: 43201

Duodecimal: A541

Hexadecimal: 4681

Square: 325766401

Square Root: 134.34656675925888

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

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 10. A31423

Primes of form n² + 625. A256777

Beginning with 3, least number such that concatenation of first n terms and its digit reversal both are primes. A111382

Primes of the form 128·k + 1. A208177

a(n) = 1 + 2·n² + 3·n³ + 4·n⁴. A209262

Last term of prime quadruples. A90258

a(n) is the n-th prime whose decimal expansion begins with the decimal expansion of n. A77345

Primes p such that (p¹²⁸ + 1)/2 is prime. A341230

Third row of Pascal-(1,7,1) array A081582. A81593

Primes with distinct nonprime digits. A155024