18949716048 has 20 divisors (see below), whose sum is σ = 48953433248. Its totient is φ = 6316572000.

The previous prime is 18949716013. The next prime is 18949716059. The reversal of 18949716048 is 84061794981.

It is a happy number.

It is a congruent number.

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, 197392828 + ... + 197392923.

Almost surely, 2^18949716048 is an apocalyptic number.

It is an amenable number.

18949716048 is an abundant number, since it is smaller than the sum of its proper divisors (30003717200).

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

18949716048 is a wasteful number, since it uses less digits than its factorization.

18949716048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394785762 (or 394785756 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 57.

The spelling of 18949716048 in words is "eighteen billion, nine hundred forty-nine million, seven hundred sixteen thousand, forty-eight".