166371165 has 48 divisors (see below), whose sum is σ = 301392000. Its totient is φ = 88039872.

The previous prime is 166371151. The next prime is 166371221. The reversal of 166371165 is 561173661.

166371165 is a `hidden beast` number, since 1 + 6 + 637 + 1 + 16 + 5 = 666.

It is not a de Polignac number, because 166371165 - 2⁵ = 166371133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 180576 + ... + 181494.

It is an arithmetic number, because the mean of its divisors is an integer number (6279000).

Almost surely, 2^166371165 is an apocalyptic number.

166371165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166371165 is a deficient number, since it is larger than the sum of its proper divisors (135020835).

166371165 is an equidigital number, since it uses as much as digits as its factorization.

166371165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1076 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 166371165 is about 12898.4946796128. The cubic root of 166371165 is about 549.9957740722.

The spelling of 166371165 in words is "one hundred sixty-six million, three hundred seventy-one thousand, one hundred sixty-five".