Properties of the Number 18545

Eighteen Thousand Five Hundred Forty-Five

Basics

Value: 18544 → 18545 → 18546

Parity: odd

Prime: No

Previous Prime: 18541

Next Prime: 18553

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 3709

Divisors: 1, 5, 3709, 18545

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100001110001

Octal: 44161

Duodecimal: A895

Hexadecimal: 4871

Square: 343917025

Square Root: 136.1800279042415

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

a(n) = floor(n*φ¹⁴), where φ is the golden ratio, A001622. A4929

Numbers k such that 135·2^k+1 is prime. A32417

Numbers k such that k![6] + 2 is prime, where k![6] = A085158(k) = sextuple factorial. A287207

Class numbers associated with terms of A001988. A1989

Multiplicity of highest weight (or singular) vectors associated with character chi₁₇₂ of Monster module. A34560

Smallest odd k > 1 such that k·2^prime(n) + 1 is prime. A253398

Divisors of 605. A18545