166161316 has 12 divisors (see below), whose sum is σ = 295549660. Its totient is φ = 81718560.

The previous prime is 166161313. The next prime is 166161337. The reversal of 166161316 is 613161661.

It can be written as a sum of positive squares in 2 ways, for example, as 4972900 + 161188416 = 2230^2 + 12696^2 .

It is not an unprimeable number, because it can be changed into a prime (166161313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340251 + ... + 340738.

Almost surely, 2^166161316 is an apocalyptic number.

It is an amenable number.

166161316 is a deficient number, since it is larger than the sum of its proper divisors (129388344).

166161316 is a wasteful number, since it uses less digits than its factorization.

166161316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681054 (or 681052 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 166161316 is about 12890.3574814665. The cubic root of 166161316 is about 549.7644346588.

The spelling of 166161316 in words is "one hundred sixty-six million, one hundred sixty-one thousand, three hundred sixteen".