165085369 has 2 divisors, whose sum is σ = 165085370. Its totient is φ = 165085368.

The previous prime is 165085321. The next prime is 165085373. The reversal of 165085369 is 963580561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161798400 + 3286969 = 12720^2 + 1813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165085369 is a prime.

It is a super-2 number, since 2×165085369² = 54506358115732322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (165085169) 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, 82542684 + 82542685.

It is an arithmetic number, because the mean of its divisors is an integer number (82542685).

Almost surely, 2^165085369 is an apocalyptic number.

It is an amenable number.

165085369 is a deficient number, since it is larger than the sum of its proper divisors (1).

165085369 is an equidigital number, since it uses as much as digits as its factorization.

165085369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 165085369 is about 12848.5551327766. Note that the first 3 decimals coincide. The cubic root of 165085369 is about 548.5752313486.

The spelling of 165085369 in words is "one hundred sixty-five million, eighty-five thousand, three hundred sixty-nine".