Properties of the Number 18193

Eighteen Thousand One Hundred Ninety-Three

Basics

Value: 18192 → 18193 → 18194

Parity: odd

Prime: No

Previous Prime: 18191

Next Prime: 18199

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 7 × 23 × 113

Divisors: 1, 7, 23, 113, 161, 791, 2599, 18193

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011100010001

Octal: 43421

Duodecimal: A641

Hexadecimal: 4711

Square: 330985249

Square Root: 134.8814294111684

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 binary strings of length n which have the same number of 00 and 01 substrings. A163493

Numbers n such that p(9n) is prime, where p(n) is the number of partitions of n. A114169

Composites whose prime factorization in base 11 is an anagram of the number in base 11. A260054

a(n) is the first composite number having the same base-n digits as its prime factors (with multiplicity), excluding zero digits (or 0 if no such composite number exists). A278981

Expansion of e.g.f. ∏_k>=1 1/(1 - x^prime(k))^1/prime(k). A318913

Sum of terms in level n of TRIP - Stern sequence associated with permutation triple (e,e,132). A278613

Compound filter: a(n) = P(σ(n), σ(2n)), where P(n,k) is sequence A000027 used as a pairing function, and σ is the sum of divisors (A000203). A286359

MM-numbers of capturing, non-nesting multiset partitions (with empty parts allowed). A326260

a(n) is the smallest composite number having the same base-n digits (both type and quantity) as its prime factors (with multiplicity). A281336

Odd composite integers m such that U(m)² == 1 (mod m) and V(m) == 7 (mod m), where U(m) and V(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=7 and b=-1, respectively. A337630