18748421424 has 60 divisors (see below), whose sum is σ = 52694825976. Its totient is φ = 6222640896.

The previous prime is 18748421413. The next prime is 18748421467. The reversal of 18748421424 is 42412484781.

18748421424 is a `hidden beast` number, since 187 + 4 + 8 + 42 + 1 + 424 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18748421424.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245842 + ... + 312945.

Almost surely, 2^18748421424 is an apocalyptic number.

It is an amenable number.

18748421424 is an abundant number, since it is smaller than the sum of its proper divisors (33946404552).

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

18748421424 is a wasteful number, since it uses less digits than its factorization.

18748421424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559034 (or 559025 counting only the distinct ones).

The product of its digits is 458752, while the sum is 45.

The spelling of 18748421424 in words is "eighteen billion, seven hundred forty-eight million, four hundred twenty-one thousand, four hundred twenty-four".