181168 has 30 divisors (see below), whose sum is σ = 385764. Its totient is φ = 82368.

The previous prime is 181157. The next prime is 181183. The reversal of 181168 is 861181.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2671 + ... + 2737.

2¹⁸¹¹⁶⁸ 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 181168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192882).

181168 is an abundant number, since it is smaller than the sum of its proper divisors (204596).

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

181168 is a wasteful number, since it uses less digits than its factorization.

181168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 82 counting only the distinct ones).

The product of its digits is 384, while the sum is 25.

The square root of 181168 is about 425.6383441374. The cubic root of 181168 is about 56.5840240926.

The spelling of 181168 in words is "one hundred eighty-one thousand, one hundred sixty-eight".