18350185168 has 20 divisors (see below), whose sum is σ = 40632553120. Its totient is φ = 7864365024.

The previous prime is 18350185157. The next prime is 18350185171. The reversal of 18350185168 is 86158105381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81920358 + ... + 81920581.

It is an arithmetic number, because the mean of its divisors is an integer number (2031627656).

Almost surely, 2^18350185168 is an apocalyptic number.

It is an amenable number.

18350185168 is an abundant number, since it is smaller than the sum of its proper divisors (22282367952).

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

18350185168 is a wasteful number, since it uses less digits than its factorization.

18350185168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163840954 (or 163840948 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 46.

The spelling of 18350185168 in words is "eighteen billion, three hundred fifty million, one hundred eighty-five thousand, one hundred sixty-eight".