165005166 has 16 divisors (see below), whose sum is σ = 330603264. Its totient is φ = 54902904.

The previous prime is 165005161. The next prime is 165005171. The reversal of 165005166 is 661500561.

It is an interprime number because it is at equal distance from previous prime (165005161) and next prime (165005171).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165005161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21046 + ... + 27801.

It is an arithmetic number, because the mean of its divisors is an integer number (20662704).

Almost surely, 2^165005166 is an apocalyptic number.

165005166 is an abundant number, since it is smaller than the sum of its proper divisors (165598098).

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

165005166 is a wasteful number, since it uses less digits than its factorization.

165005166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49415.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 165005166 is about 12845.4336633685. The cubic root of 165005166 is about 548.4863793271.

The spelling of 165005166 in words is "one hundred sixty-five million, five thousand, one hundred sixty-six".