166268169 has 12 divisors (see below), whose sum is σ = 240454656. Its totient is φ = 110711832.

The previous prime is 166268153. The next prime is 166268189. The reversal of 166268169 is 961862661.

166268169 is a `hidden beast` number, since 1 + 6 + 626 + 8 + 16 + 9 = 666.

It is not a de Polignac number, because 166268169 - 2⁴ = 166268153 is a prime.

It is a super-2 number, since 2×166268169² = 55290208045225122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166268189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2937 + ... + 18470.

It is an arithmetic number, because the mean of its divisors is an integer number (20037888).

Almost surely, 2^166268169 is an apocalyptic number.

It is an amenable number.

166268169 is a deficient number, since it is larger than the sum of its proper divisors (74186487).

166268169 is a wasteful number, since it uses less digits than its factorization.

166268169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22276 (or 22273 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 166268169 is about 12894.5015025785. The cubic root of 166268169 is about 549.8822546844.

The spelling of 166268169 in words is "one hundred sixty-six million, two hundred sixty-eight thousand, one hundred sixty-nine".