180166 has 16 divisors (see below), whose sum is σ = 327456. Its totient is φ = 72576.

The previous prime is 180161. The next prime is 180179. The reversal of 180166 is 661081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180161) 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, 141 + ... + 616.

It is an arithmetic number, because the mean of its divisors is an integer number (20466).

2¹⁸⁰¹⁶⁶ is an apocalyptic number.

180166 is a deficient number, since it is larger than the sum of its proper divisors (147290).

180166 is a wasteful number, since it uses less digits than its factorization.

180166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 180166 is about 424.4596565046. The cubic root of 180166 is about 56.4795132867.

The spelling of 180166 in words is "one hundred eighty thousand, one hundred sixty-six".