18888790018 has 32 divisors (see below), whose sum is σ = 32759935488. Its totient is φ = 8000640000.

The previous prime is 18888790007. The next prime is 18888790027. The reversal of 18888790018 is 81009788881.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1010598 + ... + 1029118.

It is an arithmetic number, because the mean of its divisors is an integer number (1023747984).

Almost surely, 2^18888790018 is an apocalyptic number.

18888790018 is a deficient number, since it is larger than the sum of its proper divisors (13871145470).

18888790018 is a wasteful number, since it uses less digits than its factorization.

18888790018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19378.

The product of its (nonzero) digits is 2064384, while the sum is 58.

The spelling of 18888790018 in words is "eighteen billion, eight hundred eighty-eight million, seven hundred ninety thousand, eighteen".