18893408968 has 64 divisors (see below), whose sum is σ = 40668405120. Its totient is φ = 8060774400.

The previous prime is 18893408959. The next prime is 18893408981. The reversal of 18893408968 is 86980439881.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18504298 + ... + 18505318.

It is an arithmetic number, because the mean of its divisors is an integer number (635443830).

Almost surely, 2^18893408968 is an apocalyptic number.

It is an amenable number.

18893408968 is an abundant number, since it is smaller than the sum of its proper divisors (21774996152).

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

18893408968 is a wasteful number, since it uses less digits than its factorization.

18893408968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198 (or 2194 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 64.

The spelling of 18893408968 in words is "eighteen billion, eight hundred ninety-three million, four hundred eight thousand, nine hundred sixty-eight".