18734207424 has 56 divisors (see below), whose sum is σ = 49608546960. Its totient is φ = 6239576064.

The previous prime is 18734207419. The next prime is 18734207431. The reversal of 18734207424 is 42470243781.

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, 196272 + ... + 275664.

It is an arithmetic number, because the mean of its divisors is an integer number (885866910).

Almost surely, 2^18734207424 is an apocalyptic number.

It is an amenable number.

18734207424 is an abundant number, since it is smaller than the sum of its proper divisors (30874339536).

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

18734207424 is a wasteful number, since it uses less digits than its factorization.

18734207424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80637 (or 80627 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 42.

The spelling of 18734207424 in words is "eighteen billion, seven hundred thirty-four million, two hundred seven thousand, four hundred twenty-four".