18199088 has 20 divisors (see below), whose sum is σ = 35421840. Its totient is φ = 9057984.

The previous prime is 18199073. The next prime is 18199117. The reversal of 18199088 is 88099181.

It is a happy 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, 1181 + ... + 6147.

It is an arithmetic number, because the mean of its divisors is an integer number (1771092).

Almost surely, 2^18199088 is an apocalyptic number.

It is an amenable number.

18199088 is a deficient number, since it is larger than the sum of its proper divisors (17222752).

18199088 is a wasteful number, since it uses less digits than its factorization.

18199088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204 (or 5198 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 44.

The square root of 18199088 is about 4266.0389121526. The cubic root of 18199088 is about 263.0368176998.

The spelling of 18199088 in words is "eighteen million, one hundred ninety-nine thousand, eighty-eight".