18507984828 has 24 divisors (see below), whose sum is σ = 43525343232. Its totient is φ = 6120750384.

The previous prime is 18507984823. The next prime is 18507984829. The reversal of 18507984828 is 82848970581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18507984823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6070650 + ... + 6073697.

It is an arithmetic number, because the mean of its divisors is an integer number (1813555968).

Almost surely, 2^18507984828 is an apocalyptic number.

It is an amenable number.

18507984828 is an abundant number, since it is smaller than the sum of its proper divisors (25017358404).

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

18507984828 is a wasteful number, since it uses less digits than its factorization.

18507984828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12144481 (or 12144479 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 60.

The spelling of 18507984828 in words is "eighteen billion, five hundred seven million, nine hundred eighty-four thousand, eight hundred twenty-eight".