165168168 has 32 divisors (see below), whose sum is σ = 450459360. Its totient is φ = 50050880.

The previous prime is 165168161. The next prime is 165168169. The reversal of 165168168 is 861861561.

It is not an unprimeable number, because it can be changed into a prime (165168161) 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, 312555 + ... + 313082.

It is an arithmetic number, because the mean of its divisors is an integer number (14076855).

Almost surely, 2^165168168 is an apocalyptic number.

It is an amenable number.

165168168 is an abundant number, since it is smaller than the sum of its proper divisors (285291192).

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

165168168 is a wasteful number, since it uses less digits than its factorization.

165168168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625657 (or 625653 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 165168168 is about 12851.7768421335. The cubic root of 165168168 is about 548.6669291354. Note that the first 3 decimals are identical.

The spelling of 165168168 in words is "one hundred sixty-five million, one hundred sixty-eight thousand, one hundred sixty-eight".