965905169 has 2 divisors, whose sum is σ = 965905170. Its totient is φ = 965905168.

The previous prime is 965905097. The next prime is 965905177. The reversal of 965905169 is 961509569.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 964723600 + 1181569 = 31060^2 + 1087^2 .

It is a cyclic number.

It is not a de Polignac number, because 965905169 - 2²⁴ = 949127953 is a prime.

It is a super-2 number, since 2×965905169² = 1865945591001837122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (965905189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482952584 + 482952585.

It is an arithmetic number, because the mean of its divisors is an integer number (482952585).

Almost surely, 2^965905169 is an apocalyptic number.

It is an amenable number.

965905169 is a deficient number, since it is larger than the sum of its proper divisors (1).

965905169 is an equidigital number, since it uses as much as digits as its factorization.

965905169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 656100, while the sum is 50.

The square root of 965905169 is about 31079.0149296917. The cubic root of 965905169 is about 988.5033908207.

The spelling of 965905169 in words is "nine hundred sixty-five million, nine hundred five thousand, one hundred sixty-nine".