168169069 has 2 divisors, whose sum is σ = 168169070. Its totient is φ = 168169068.

The previous prime is 168169063. The next prime is 168169097. The reversal of 168169069 is 960961861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96766569 + 71402500 = 9837^2 + 8450^2 .

It is a cyclic number.

It is not a de Polignac number, because 168169069 - 2⁵ = 168169037 is a prime.

It is a super-2 number, since 2×168169069² = 56561671536653522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168169063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84084534 + 84084535.

It is an arithmetic number, because the mean of its divisors is an integer number (84084535).

Almost surely, 2^168169069 is an apocalyptic number.

It is an amenable number.

168169069 is a deficient number, since it is larger than the sum of its proper divisors (1).

168169069 is an equidigital number, since it uses as much as digits as its factorization.

168169069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 168169069 is about 12968.0017350400. The cubic root of 168169069 is about 551.9698718504.

The spelling of 168169069 in words is "one hundred sixty-eight million, one hundred sixty-nine thousand, sixty-nine".