18957488 has 20 divisors (see below), whose sum is σ = 40069608. Its totient is φ = 8616960.

The previous prime is 18957481. The next prime is 18957527. The reversal of 18957488 is 88475981.

It is not an unprimeable number, because it can be changed into a prime (18957481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53681 + ... + 54032.

Almost surely, 2^18957488 is an apocalyptic number.

It is an amenable number.

18957488 is an abundant number, since it is smaller than the sum of its proper divisors (21112120).

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

18957488 is a wasteful number, since it uses less digits than its factorization.

18957488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107732 (or 107726 counting only the distinct ones).

The product of its digits is 645120, while the sum is 50.

The square root of 18957488 is about 4354.0197519074. The cubic root of 18957488 is about 266.6410003075.

The spelling of 18957488 in words is "eighteen million, nine hundred fifty-seven thousand, four hundred eighty-eight".