Properties of the Number -1948

Nine Hundred Forty-Eight

Basics

Value: -1949 → -1948 → -1947

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 487

Divisors: 1, 2, 4, 487, 974, 1948

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -11110011100

Octal: -3634

Duodecimal: -1164

Hexadecimal: -79c

Square: 3794704

Square Root: 44.13615298142782

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

Expansion of f(-x⁶)³ / (f(-x⁴)² * ψ(x)) in powers of·where φ(), f() are Ramanujan θ functions. A262152

a(n) = 10ⁿ - n¹¹. A24125

Expansion of ∑_k>=1 (-1)^k+1*k·x^k/(1 - k·x^k). A308366

Number of partitions of n if there are two kinds of 1's and two kinds of 2's. A97

a(n) is the number of partitions of 2n that can be obtained by adding together two (not necessarily distinct) partitions of n. A2219

Number of separable integer partitions of n without an alternating permutation. A345166

Positive integers n such that n⁵ + 1 is semiprime. A104238

T-toothpick sequence (see Comments lines for definition). A160172

a(n) = s(1)*s(n) + s(2)*s(n-1) + ... + s(k)*s(n+1-k), where k = floor((n+1)/2), s = (natural numbers >= 3). A24312

Number of lone-child-avoiding locally disjoint rooted identity trees whose leaves form an integer partition of n. A316694