Properties of the Number -1891998

Eight Hundred Ninety-One Thousand Nine Hundred Ninety-Eight

Basics

Value: -1891999 → -1891998 → -1891997

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 45

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ⁵ × 17 × 229

Divisors: 1, 2, 3, 6, 9, 17, 18, 27, 34, 51

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111001101111010011110

Octal: -7157236

Duodecimal: -772AA6

Hexadecimal: -1cde9e

Square: 3579656432004

Square Root: 1375.4991821153512

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

T(n,k) = Number of n X k 0..1 arrays with the number of 1's king-move adjacent to some 0 two less than the number of 0's adjacent to some 1. A286216

Number of n X 3 0..1 arrays with the number of 1's king-move adjacent to some 0 two less than the number of 0's adjacent to some 1. A286211