166161166 has 8 divisors (see below), whose sum is σ = 249436944. Its totient is φ = 83015520.

The previous prime is 166161143. The next prime is 166161187. The reversal of 166161166 is 661161661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29275 + ... + 34486.

It is an arithmetic number, because the mean of its divisors is an integer number (31179618).

Almost surely, 2^166161166 is an apocalyptic number.

166161166 is a deficient number, since it is larger than the sum of its proper divisors (83275778).

166161166 is a wasteful number, since it uses less digits than its factorization.

166161166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65066.

The product of its digits is 7776, while the sum is 34.

The square root of 166161166 is about 12890.3516631626. The cubic root of 166161166 is about 549.7642692278.

The spelling of 166161166 in words is "one hundred sixty-six million, one hundred sixty-one thousand, one hundred sixty-six".