18080372 has 12 divisors (see below), whose sum is σ = 31711680. Its totient is φ = 9019896.

The previous prime is 18080351. The next prime is 18080393. The reversal of 18080372 is 27308081.

It is an interprime number because it is at equal distance from previous prime (18080351) and next prime (18080393).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2972 + ... + 6707.

It is an arithmetic number, because the mean of its divisors is an integer number (2642640).

Almost surely, 2^18080372 is an apocalyptic number.

It is an amenable number.

18080372 is a deficient number, since it is larger than the sum of its proper divisors (13631308).

18080372 is a wasteful number, since it uses less digits than its factorization.

18080372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10150 (or 10148 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 18080372 is about 4252.1020683892. The cubic root of 18080372 is about 262.4636236819.

The spelling of 18080372 in words is "eighteen million, eighty thousand, three hundred seventy-two".