18085018588 has 72 divisors (see below), whose sum is σ = 41371882272. Its totient is φ = 6843424896.

The previous prime is 18085018579. The next prime is 18085018603. The reversal of 18085018588 is 88581058081.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95695 + ... + 212902.

It is an arithmetic number, because the mean of its divisors is an integer number (574609476).

Almost surely, 2^18085018588 is an apocalyptic number.

It is an amenable number.

18085018588 is an abundant number, since it is smaller than the sum of its proper divisors (23286863684).

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

18085018588 is a wasteful number, since it uses less digits than its factorization.

18085018588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308651 (or 308642 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 52.

The spelling of 18085018588 in words is "eighteen billion, eighty-five million, eighteen thousand, five hundred eighty-eight".