18037038 has 16 divisors (see below), whose sum is σ = 36913536. Its totient is φ = 5872440.

The previous prime is 18037021. The next prime is 18037069. The reversal of 18037038 is 83073081.

It is a junction number, because it is equal to n+sod(n) for n = 18036996 and 18037014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34698 + ... + 35213.

It is an arithmetic number, because the mean of its divisors is an integer number (2307096).

Almost surely, 2^18037038 is an apocalyptic number.

18037038 is an abundant number, since it is smaller than the sum of its proper divisors (18876498).

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

18037038 is a wasteful number, since it uses less digits than its factorization.

18037038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69959.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 18037038 is about 4247.0034141733. The cubic root of 18037038 is about 262.2537700108.

The spelling of 18037038 in words is "eighteen million, thirty-seven thousand, thirty-eight".