Properties of the Number 18419

Eighteen Thousand Four Hundred Nineteen

Basics

Value: 18418 → 18419 → 18420

Parity: odd

Prime: No

Previous Prime: 18413

Next Prime: 18427

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 113 × 163

Divisors: 1, 113, 163, 18419

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011111110011

Octal: 43763

Duodecimal: A7AB

Hexadecimal: 47f3

Square: 339259561

Square Root: 135.71661652133832

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 isomorphism classes of virtual quandles of order n. A385041

Records in A333549. A333550

Number of partitions of 2·n into distinct parts with exactly two odd parts. A96914

Triangle of coefficients of polynomials u(n,x) jointly generated with A210748; see the Formula section. A210747

Numbers k such that k and k+2 have the same unitary abundance (A129468). A335252

Composite numbers k such that if k = a U b (where U denotes concatenation) then a' + b' = k', where a', b' and k' are the arithmetic derivatives of a, b and k. A239724

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 737", based on the 5-celled von Neumann neighborhood. A273480

a(n) = 12·H(n) where H() is the Hurwitz class number. A259825

Partial quotients of the continued fraction expansion of the constant A121474 defined by the sums: c = ∑_n>=1 [log₂(eⁿ)]/2ⁿ = ∑_n>=1 1/2^[log(2ⁿ)]. A121475

Divisors of 372. A18419