18085038 has 32 divisors (see below), whose sum is σ = 39052800. Its totient is φ = 5566176.

The previous prime is 18085019. The next prime is 18085051. The reversal of 18085038 is 83058081.

It is a super-2 number, since 2×18085038² = 654137198922888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1743 + ... + 6261.

It is an arithmetic number, because the mean of its divisors is an integer number (1220400).

Almost surely, 2^18085038 is an apocalyptic number.

18085038 is an abundant number, since it is smaller than the sum of its proper divisors (20967762).

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

18085038 is a wasteful number, since it uses less digits than its factorization.

18085038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4576.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 18085038 is about 4252.6507027970. The cubic root of 18085038 is about 262.4861997280.

The spelling of 18085038 in words is "eighteen million, eighty-five thousand, thirty-eight".