166161356 has 24 divisors (see below), whose sum is σ = 304226496. Its totient is φ = 79326080.

The previous prime is 166161341. The next prime is 166161367. The reversal of 166161356 is 653161661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3071 + ... + 18486.

It is an arithmetic number, because the mean of its divisors is an integer number (12676104).

Almost surely, 2^166161356 is an apocalyptic number.

It is an amenable number.

166161356 is a deficient number, since it is larger than the sum of its proper divisors (138065140).

166161356 is a wasteful number, since it uses less digits than its factorization.

166161356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21649 (or 21647 counting only the distinct ones).

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

The square root of 166161356 is about 12890.3590330138. The cubic root of 166161356 is about 549.7644787737.

The spelling of 166161356 in words is "one hundred sixty-six million, one hundred sixty-one thousand, three hundred fifty-six".