18698910832 has 80 divisors (see below), whose sum is σ = 43140667392. Its totient is φ = 7682676480.

The previous prime is 18698910721. The next prime is 18698910847. The reversal of 18698910832 is 23801989681.

It is a congruent number.

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, 346338 + ... + 396670.

Almost surely, 2^18698910832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18698910832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21570333696).

18698910832 is an abundant number, since it is smaller than the sum of its proper divisors (24441756560).

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

18698910832 is a wasteful number, since it uses less digits than its factorization.

18698910832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50486 (or 50480 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 18698910832 in words is "eighteen billion, six hundred ninety-eight million, nine hundred ten thousand, eight hundred thirty-two".