18956460 has 48 divisors (see below), whose sum is σ = 53385696. Its totient is φ = 5025792.

The previous prime is 18956449. The next prime is 18956461. The reversal of 18956460 is 6465981.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (18956461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10762 + ... + 12398.

It is an arithmetic number, because the mean of its divisors is an integer number (1112202).

Almost surely, 2^18956460 is an apocalyptic number.

18956460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18956460 is an abundant number, since it is smaller than the sum of its proper divisors (34429236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18956460 is a wasteful number, since it uses less digits than its factorization.

18956460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842 (or 1840 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 18956460 is about 4353.9016984769. The cubic root of 18956460 is about 266.6361805426.

The spelling of 18956460 in words is "eighteen million, nine hundred fifty-six thousand, four hundred sixty".