18799690728 has 64 divisors (see below), whose sum is σ = 57845208960. Its totient is φ = 4958159616.

The previous prime is 18799690727. The next prime is 18799690759. The reversal of 18799690728 is 82709699781.

It is not an unprimeable number, because it can be changed into a prime (18799690727) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4301775 + ... + 4306142.

It is an arithmetic number, because the mean of its divisors is an integer number (903831390).

Almost surely, 2^18799690728 is an apocalyptic number.

It is an amenable number.

18799690728 is an abundant number, since it is smaller than the sum of its proper divisors (39045518232).

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

18799690728 is a wasteful number, since it uses less digits than its factorization.

18799690728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8607946 (or 8607942 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 66.

The spelling of 18799690728 in words is "eighteen billion, seven hundred ninety-nine million, six hundred ninety thousand, seven hundred twenty-eight".