18942559364 has 12 divisors (see below), whose sum is σ = 33281550288. Its totient is φ = 9433545000.

The previous prime is 18942559357. The next prime is 18942559369. The reversal of 18942559364 is 46395524981.

It is not an unprimeable number, because it can be changed into a prime (18942559369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9432542 + ... + 9434549.

It is an arithmetic number, because the mean of its divisors is an integer number (2773462524).

Almost surely, 2^18942559364 is an apocalyptic number.

It is an amenable number.

18942559364 is a deficient number, since it is larger than the sum of its proper divisors (14338990924).

18942559364 is a wasteful number, since it uses less digits than its factorization.

18942559364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18867346 (or 18867344 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 56.

The spelling of 18942559364 in words is "eighteen billion, nine hundred forty-two million, five hundred fifty-nine thousand, three hundred sixty-four".