18798988 has 24 divisors (see below), whose sum is σ = 35803712. Its totient is φ = 8584704.

The previous prime is 18798973. The next prime is 18799009. The reversal of 18798988 is 88989781.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3181 + ... + 6907.

Almost surely, 2^18798988 is an apocalyptic number.

It is an amenable number.

18798988 is a deficient number, since it is larger than the sum of its proper divisors (17004724).

18798988 is a wasteful number, since it uses less digits than its factorization.

18798988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841 (or 3839 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 58.

The square root of 18798988 is about 4335.7799759674. The cubic root of 18798988 is about 265.8958078374.

The spelling of 18798988 in words is "eighteen million, seven hundred ninety-eight thousand, nine hundred eighty-eight".