Properties of the Number -1

Basics

Value: -2 → -1 → 0

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 1

Digital Root: 1

Palindrome: Yes

Factorization:

Divisors: 1

Polygonal

Triangular: Yes

Square: Yes

Pentagonal: Yes

Hexagonal: Yes

Heptagonal: Yes

Tetrahedral: Yes

Today's Target

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Representations

Binary: -1

Octal: -1

Duodecimal: -1

Hexadecimal: -1

Square: 1

Square Root: 1

Classification

Fibonacci: Yes

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

No sequences found.