18080864 has 24 divisors (see below), whose sum is σ = 36561168. Its totient is φ = 8795520.

The previous prime is 18080861. The next prime is 18080869. The reversal of 18080864 is 46808081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18080861) 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, 6452 + ... + 8819.

It is an arithmetic number, because the mean of its divisors is an integer number (1523382).

Almost surely, 2^18080864 is an apocalyptic number.

It is an amenable number.

18080864 is an abundant number, since it is smaller than the sum of its proper divisors (18480304).

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

18080864 is a wasteful number, since it uses less digits than its factorization.

18080864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15318 (or 15310 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 18080864 is about 4252.1599217339. The cubic root of 18080864 is about 262.4660043655.

The spelling of 18080864 in words is "eighteen million, eighty thousand, eight hundred sixty-four".