Properties of the Number 1630

One Thousand Six Hundred Thirty

Basics

Value: 1629 → 1630 → 1631

Parity: even

Prime: No

Previous Prime: 1627

Next Prime: 1637

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 163

Divisors: 1, 2, 5, 10, 163, 326, 815, 1630

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001011110

Octal: 3136

Duodecimal: B3A

Hexadecimal: 65e

Square: 2656900

Square Root: 40.3732584763727

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

Constant term of the reduction of n-th Fibonacci polynomial by x² -> x+1. (See Comments.) A192232

Numbers m such that the Bernoulli number B_m has denominator 66. A51230

Numbers k such that k⁶⁴ + 1 is prime. A6316

Expansion of (∏_j>=1 (1-(-x)^j) - 1)¹⁰ in powers of x. A1488

Number of integer partitions of n whose mean is a mode, i.e., partitions whose mean appears at least as many times as each of the other parts. A363724

Numbers whose binary indices and prime indices have the same sum. A372427

Number of toothpicks after n-th stage in the I-toothpick structure of A139250. A160164

Numbers k whose largest divisor <= sqrt(k) equals 10. A162530

A self-generating sequence: a(1)=1, a(2)=2, a(n+1) chosen so that a(n+1)-a(n-1) is the first number not obtainable as a(j)-a(i) for 1<=i<j<=n. A1149

Number of inversion sequences of length n avoiding the consecutive patterns 101, 102, 201, and 210. A328434