18998837304 has 32 divisors (see below), whose sum is σ = 47578043520. Its totient is φ = 6322152416.

The previous prime is 18998837287. The next prime is 18998837317. The reversal of 18998837304 is 40373889981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660204 + ... + 688379.

It is an arithmetic number, because the mean of its divisors is an integer number (1486813860).

Almost surely, 2^18998837304 is an apocalyptic number.

It is an amenable number.

18998837304 is an abundant number, since it is smaller than the sum of its proper divisors (28579206216).

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

18998837304 is a wasteful number, since it uses less digits than its factorization.

18998837304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349179 (or 1349175 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 60.

The spelling of 18998837304 in words is "eighteen billion, nine hundred ninety-eight million, eight hundred thirty-seven thousand, three hundred four".