18867575168 has 192 divisors, whose sum is σ = 44108492400. Its totient is φ = 7963619328.

The previous prime is 18867575159. The next prime is 18867575183. The reversal of 18867575168 is 86157576881.

It is a self number, because there is not a number n which added to its sum of digits gives 18867575168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148563521 + ... + 148563647.

Almost surely, 2^18867575168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18867575168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22054246200).

18867575168 is an abundant number, since it is smaller than the sum of its proper divisors (25240917232).

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

18867575168 is a wasteful number, since it uses less digits than its factorization.

18867575168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 198 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 62.

The spelling of 18867575168 in words is "eighteen billion, eight hundred sixty-seven million, five hundred seventy-five thousand, one hundred sixty-eight".