18836589368 has 16 divisors (see below), whose sum is σ = 35325017160. Its totient is φ = 9416584800.

The previous prime is 18836589349. The next prime is 18836589403. The reversal of 18836589368 is 86398563881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166298 + ... + 255593.

Almost surely, 2^18836589368 is an apocalyptic number.

It is an amenable number.

18836589368 is a deficient number, since it is larger than the sum of its proper divisors (16488427792).

18836589368 is a wasteful number, since it uses less digits than its factorization.

18836589368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427478 (or 427474 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 65.

The spelling of 18836589368 in words is "eighteen billion, eight hundred thirty-six million, five hundred eighty-nine thousand, three hundred sixty-eight".