166453169 has 2 divisors, whose sum is σ = 166453170. Its totient is φ = 166453168.

The previous prime is 166453163. The next prime is 166453187. The reversal of 166453169 is 961354661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158256400 + 8196769 = 12580^2 + 2863^2 .

It is a cyclic number.

It is not a de Polignac number, because 166453169 - 2²⁰ = 165404593 is a prime.

It is a super-2 number, since 2×166453169² = 55413314940285122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (166453163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83226584 + 83226585.

It is an arithmetic number, because the mean of its divisors is an integer number (83226585).

Almost surely, 2^166453169 is an apocalyptic number.

It is an amenable number.

166453169 is a deficient number, since it is larger than the sum of its proper divisors (1).

166453169 is an equidigital number, since it uses as much as digits as its factorization.

166453169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The square root of 166453169 is about 12901.6731085546. The cubic root of 166453169 is about 550.0861231526.

The spelling of 166453169 in words is "one hundred sixty-six million, four hundred fifty-three thousand, one hundred sixty-nine".