166163156 has 12 divisors (see below), whose sum is σ = 300812820. Its totient is φ = 80216640.

The previous prime is 166163147. The next prime is 166163171. The reversal of 166163156 is 651361661.

It can be written as a sum of positive squares in 2 ways, for example, as 138768400 + 27394756 = 11780^2 + 5234^2 .

It is a super-2 number, since 2×166163156² = 55220388823760672, which contains 22 as substring.

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, 716105 + ... + 716336.

It is an arithmetic number, because the mean of its divisors is an integer number (25067735).

Almost surely, 2^166163156 is an apocalyptic number.

It is an amenable number.

166163156 is a deficient number, since it is larger than the sum of its proper divisors (134649664).

166163156 is a wasteful number, since it uses less digits than its factorization.

166163156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432474 (or 1432472 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 166163156 is about 12890.4288524471. The cubic root of 166163156 is about 549.7664639374.

The spelling of 166163156 in words is "one hundred sixty-six million, one hundred sixty-three thousand, one hundred fifty-six".