18385016 has 16 divisors (see below), whose sum is σ = 37123800. Its totient is φ = 8485344.

The previous prime is 18384991. The next prime is 18385021. The reversal of 18385016 is 61058381.

It is an alternating number because its digits alternate between odd and even.

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, 88286 + ... + 88493.

Almost surely, 2^18385016 is an apocalyptic number.

It is an amenable number.

18385016 is an abundant number, since it is smaller than the sum of its proper divisors (18738784).

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

18385016 is a wasteful number, since it uses less digits than its factorization.

18385016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176798 (or 176794 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 18385016 is about 4287.7751806735. The cubic root of 18385016 is about 263.9295419565.

The spelling of 18385016 in words is "eighteen million, three hundred eighty-five thousand, sixteen".