18900168 has 32 divisors (see below), whose sum is σ = 54000960. Its totient is φ = 5400000.

The previous prime is 18900163. The next prime is 18900169. The reversal of 18900168 is 86100981.

It is not an unprimeable number, because it can be changed into a prime (18900163) 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, 56083 + ... + 56418.

It is an arithmetic number, because the mean of its divisors is an integer number (1687530).

Almost surely, 2^18900168 is an apocalyptic number.

It is an amenable number.

18900168 is an abundant number, since it is smaller than the sum of its proper divisors (35100792).

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

18900168 is a wasteful number, since it uses less digits than its factorization.

18900168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112517 (or 112513 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 18900168 is about 4347.4323456496. The cubic root of 18900168 is about 266.3719897684.

The spelling of 18900168 in words is "eighteen million, nine hundred thousand, one hundred sixty-eight".