166359169 has 2 divisors, whose sum is σ = 166359170. Its totient is φ = 166359168.

The previous prime is 166359163. The next prime is 166359223. The reversal of 166359169 is 961953661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149450625 + 16908544 = 12225^2 + 4112^2 .

It is an emirp because it is prime and its reverse (961953661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166359169 - 2⁹ = 166358657 is a prime.

It is a super-2 number, since 2×166359169² = 55350746220741122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (166359163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83179584 + 83179585.

It is an arithmetic number, because the mean of its divisors is an integer number (83179585).

Almost surely, 2^166359169 is an apocalyptic number.

It is an amenable number.

166359169 is a deficient number, since it is larger than the sum of its proper divisors (1).

166359169 is an equidigital number, since it uses as much as digits as its factorization.

166359169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 46.

The square root of 166359169 is about 12898.0296557265. The cubic root of 166359169 is about 549.9825548186.

The spelling of 166359169 in words is "one hundred sixty-six million, three hundred fifty-nine thousand, one hundred sixty-nine".