166180818 has 32 divisors (see below), whose sum is σ = 336900096. Its totient is φ = 54641808.

The previous prime is 166180799. The next prime is 166180841. The reversal of 166180818 is 818081661.

It is a super-2 number, since 2×166180818² = 55232128542298248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273471 + ... + 274077.

It is an arithmetic number, because the mean of its divisors is an integer number (10528128).

Almost surely, 2^166180818 is an apocalyptic number.

166180818 is an abundant number, since it is smaller than the sum of its proper divisors (170719278).

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

166180818 is a wasteful number, since it uses less digits than its factorization.

166180818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158.

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 166180818 is about 12891.1139161827. The cubic root of 166180818 is about 549.7859420446.

The spelling of 166180818 in words is "one hundred sixty-six million, one hundred eighty thousand, eight hundred eighteen".