Properties of the Number 1858

One Thousand Eight Hundred Fifty-Eight

Basics

Value: 1857 → 1858 → 1859

Parity: even

Prime: No

Previous Prime: 1847

Next Prime: 1861

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 929

Divisors: 1, 2, 929, 1858

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11101000010

Octal: 3502

Duodecimal: 10AA

Hexadecimal: 742

Square: 3452164

Square Root: 43.104524124504614

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 n-node unrooted quartic trees; number of n-carbon alkanes C(n)H(2n+2) ignoring stereoisomers. A602

Numbers k such that 3^k + 2 is prime. A51783

Number of collinear point-triples in the n X n X n cube. A157882

Number of partitions of n into aliquant parts (i.e., parts that do not divide n). A98743

a(n) = 2·n² + 6·n + 2. A90288

Numbers where 8 outnumbers any other digit. A292458

G.f. satisfies: A(x) = (1+x) * A(x²)*A(x³)*A(x⁴)*...*A(xⁿ)*... A129373

Number of non-isomorphic non-normal semi-magic square multiset partitions of weight n. A321721

Number of strict Golomb partitions of n. A325876

a(n) = (A088558(n)-1)/2. A96900