18698808 has 32 divisors (see below), whose sum is σ = 47836800. Its totient is φ = 6087648.

The previous prime is 18698807. The next prime is 18698891. The reversal of 18698808 is 80889681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18698807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8028 + ... + 10091.

It is an arithmetic number, because the mean of its divisors is an integer number (1494900).

Almost surely, 2^18698808 is an apocalyptic number.

It is an amenable number.

18698808 is an abundant number, since it is smaller than the sum of its proper divisors (29137992).

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

18698808 is a wasteful number, since it uses less digits than its factorization.

18698808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18171 (or 18167 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 48.

The square root of 18698808 is about 4324.2118356991. The cubic root of 18698808 is about 265.4226458481.

The spelling of 18698808 in words is "eighteen million, six hundred ninety-eight thousand, eight hundred eight".