18707557828 has 12 divisors (see below), whose sum is σ = 32741308432. Its totient is φ = 9352898280.

The previous prime is 18707557801. The next prime is 18707557849. The reversal of 18707557828 is 82875570781.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171150 + ... + 258277.

Almost surely, 2^18707557828 is an apocalyptic number.

It is an amenable number.

18707557828 is a deficient number, since it is larger than the sum of its proper divisors (14033750604).

18707557828 is a wasteful number, since it uses less digits than its factorization.

18707557828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440322 (or 440320 counting only the distinct ones).

The product of its (nonzero) digits is 8780800, while the sum is 58.

The spelling of 18707557828 in words is "eighteen billion, seven hundred seven million, five hundred fifty-seven thousand, eight hundred twenty-eight".