18522038 has 16 divisors (see below), whose sum is σ = 29120256. Its totient is φ = 8818920.

The previous prime is 18522029. The next prime is 18522059. The reversal of 18522038 is 83022581.

It is a self number, because there is not a number n which added to its sum of digits gives 18522038.

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, 11333 + ... + 12863.

It is an arithmetic number, because the mean of its divisors is an integer number (1820016).

Almost surely, 2^18522038 is an apocalyptic number.

18522038 is a deficient number, since it is larger than the sum of its proper divisors (10598218).

18522038 is a wasteful number, since it uses less digits than its factorization.

18522038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 18522038 is about 4303.7237364868. The cubic root of 18522038 is about 264.5836014188.

The spelling of 18522038 in words is "eighteen million, five hundred twenty-two thousand, thirty-eight".