166170957 has 16 divisors (see below), whose sum is σ = 231482880. Its totient is φ = 105896000.

The previous prime is 166170931. The next prime is 166170997. The reversal of 166170957 is 759071661.

It is a cyclic number.

It is not a de Polignac number, because 166170957 - 2⁸ = 166170701 is a prime.

It is a super-2 number, since 2×166170957² = 55225573900591698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166170997) 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, 669 + ... + 18242.

It is an arithmetic number, because the mean of its divisors is an integer number (14467680).

Almost surely, 2^166170957 is an apocalyptic number.

It is an amenable number.

166170957 is a deficient number, since it is larger than the sum of its proper divisors (65311923).

166170957 is a wasteful number, since it uses less digits than its factorization.

166170957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19044.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 166170957 is about 12890.7314377424. The cubic root of 166170957 is about 549.7750672508.

The spelling of 166170957 in words is "one hundred sixty-six million, one hundred seventy thousand, nine hundred fifty-seven".