18122968168 has 32 divisors (see below), whose sum is σ = 35360186400. Its totient is φ = 8700729408.

The previous prime is 18122968163. The next prime is 18122968177. The reversal of 18122968168 is 86186922181.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18122968163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426171 + ... + 466762.

It is an arithmetic number, because the mean of its divisors is an integer number (1105005825).

Almost surely, 2^18122968168 is an apocalyptic number.

It is an amenable number.

18122968168 is a deficient number, since it is larger than the sum of its proper divisors (17237218232).

18122968168 is a wasteful number, since it uses less digits than its factorization.

18122968168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893041 (or 893037 counting only the distinct ones).

The product of its digits is 663552, while the sum is 52.

The spelling of 18122968168 in words is "eighteen billion, one hundred twenty-two million, nine hundred sixty-eight thousand, one hundred sixty-eight".