18118204 has 24 divisors (see below), whose sum is σ = 35632800. Its totient is φ = 7998144.

The previous prime is 18118193. The next prime is 18118211. The reversal of 18118204 is 40281181.

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, 6379 + ... + 8770.

It is an arithmetic number, because the mean of its divisors is an integer number (1484700).

Almost surely, 2^18118204 is an apocalyptic number.

It is an amenable number.

18118204 is a deficient number, since it is larger than the sum of its proper divisors (17514596).

18118204 is a wasteful number, since it uses less digits than its factorization.

18118204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15189 (or 15187 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 18118204 is about 4256.5483669283. The cubic root of 18118204 is about 262.6465588233.

Adding to 18118204 its reverse (40281181), we get a palindrome (58399385).

The spelling of 18118204 in words is "eighteen million, one hundred eighteen thousand, two hundred four".