167166881 has 16 divisors (see below), whose sum is σ = 199718400. Its totient is φ = 139779360.

The previous prime is 167166863. The next prime is 167166887. The reversal of 167166881 is 188661761.

It is not a de Polignac number, because 167166881 - 2¹⁸ = 166904737 is a prime.

It is a super-2 number, since 2×167166881² = 55889532206536322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (167166887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8120 + ... + 20006.

It is an arithmetic number, because the mean of its divisors is an integer number (12482400).

Almost surely, 2^167166881 is an apocalyptic number.

It is an amenable number.

167166881 is a deficient number, since it is larger than the sum of its proper divisors (32551519).

167166881 is an equidigital number, since it uses as much as digits as its factorization.

167166881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11949 (or 11935 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The square root of 167166881 is about 12929.3031908143. The cubic root of 167166881 is about 550.8712153850.

The spelling of 167166881 in words is "one hundred sixty-seven million, one hundred sixty-six thousand, eight hundred eighty-one".