18800984688 has 20 divisors (see below), whose sum is σ = 48569210568. Its totient is φ = 6266994880.

The previous prime is 18800984611. The next prime is 18800984689. The reversal of 18800984688 is 88648900881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18800984689) 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, 195843543 + ... + 195843638.

Almost surely, 2^18800984688 is an apocalyptic number.

It is an amenable number.

18800984688 is an abundant number, since it is smaller than the sum of its proper divisors (29768225880).

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

18800984688 is a wasteful number, since it uses less digits than its factorization.

18800984688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391687192 (or 391687186 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 60.

The spelling of 18800984688 in words is "eighteen billion, eight hundred million, nine hundred eighty-four thousand, six hundred eighty-eight".