166881152 has 32 divisors (see below), whose sum is σ = 340578000. Its totient is φ = 81402880.

The previous prime is 166881133. The next prime is 166881179. The reversal of 166881152 is 251188661.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10652 + ... + 21147.

Almost surely, 2^166881152 is an apocalyptic number.

It is an amenable number.

166881152 is an abundant number, since it is smaller than the sum of its proper divisors (173696848).

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

166881152 is an equidigital number, since it uses as much as digits as its factorization.

166881152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31854 (or 31842 counting only the distinct ones).

The product of its digits is 23040, while the sum is 38.

The square root of 166881152 is about 12918.2487977280. The cubic root of 166881152 is about 550.5571786092.

The spelling of 166881152 in words is "one hundred sixty-six million, eight hundred eighty-one thousand, one hundred fifty-two".