166242164 has 24 divisors (see below), whose sum is σ = 317737728. Its totient is φ = 75477440.

The previous prime is 166242163. The next prime is 166242179. The reversal of 166242164 is 461242661.

It is a self number, because there is not a number n which added to its sum of digits gives 166242164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166242163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50909 + ... + 54075.

It is an arithmetic number, because the mean of its divisors is an integer number (13239072).

Almost surely, 2^166242164 is an apocalyptic number.

It is an amenable number.

166242164 is a deficient number, since it is larger than the sum of its proper divisors (151495564).

166242164 is a wasteful number, since it uses less digits than its factorization.

166242164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375 (or 4373 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 166242164 is about 12893.4930876004. The cubic root of 166242164 is about 549.8535852690.

The spelling of 166242164 in words is "one hundred sixty-six million, two hundred forty-two thousand, one hundred sixty-four".