18875678968 has 8 divisors (see below), whose sum is σ = 35391898080. Its totient is φ = 9437839480.

The previous prime is 18875678963. The next prime is 18875678971. The reversal of 18875678968 is 86987657881.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 18875678968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18875678963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1179729928 + ... + 1179729943.

It is an arithmetic number, because the mean of its divisors is an integer number (4423987260).

Almost surely, 2^18875678968 is an apocalyptic number.

It is an amenable number.

18875678968 is a deficient number, since it is larger than the sum of its proper divisors (16516219112).

18875678968 is a wasteful number, since it uses less digits than its factorization.

18875678968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359459877 (or 2359459873 counting only the distinct ones).

The product of its digits is 325140480, while the sum is 73.

The spelling of 18875678968 in words is "eighteen billion, eight hundred seventy-five million, six hundred seventy-eight thousand, nine hundred sixty-eight".