18568383428 has 12 divisors (see below), whose sum is σ = 37136766912. Its totient is φ = 7957878600.

The previous prime is 18568383371. The next prime is 18568383473. The reversal of 18568383428 is 82438386581.

It is a happy number.

18568383428 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331578248 + ... + 331578303.

It is an arithmetic number, because the mean of its divisors is an integer number (3094730576).

Almost surely, 2^18568383428 is an apocalyptic number.

It is an amenable number.

18568383428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18568383428 is a wasteful number, since it uses less digits than its factorization.

18568383428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663156562 (or 663156560 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 56.

The spelling of 18568383428 in words is "eighteen billion, five hundred sixty-eight million, three hundred eighty-three thousand, four hundred twenty-eight".