165328279 has 2 divisors, whose sum is σ = 165328280. Its totient is φ = 165328278.

The previous prime is 165328259. The next prime is 165328297. The reversal of 165328279 is 972823561.

Together with next prime (165328297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165328279 - 2⁷ = 165328151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165328259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82664139 + 82664140.

It is an arithmetic number, because the mean of its divisors is an integer number (82664140).

Almost surely, 2^165328279 is an apocalyptic number.

165328279 is a deficient number, since it is larger than the sum of its proper divisors (1).

165328279 is an equidigital number, since it uses as much as digits as its factorization.

165328279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 165328279 is about 12858.0044719233. The cubic root of 165328279 is about 548.8441611067.

The spelling of 165328279 in words is "one hundred sixty-five million, three hundred twenty-eight thousand, two hundred seventy-nine".