165112879 has 2 divisors, whose sum is σ = 165112880. Its totient is φ = 165112878.

The previous prime is 165112867. The next prime is 165112897. The reversal of 165112879 is 978211561.

It is a happy number.

Together with next prime (165112897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165112879 - 2⁷ = 165112751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165112379) 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, 82556439 + 82556440.

It is an arithmetic number, because the mean of its divisors is an integer number (82556440).

Almost surely, 2^165112879 is an apocalyptic number.

165112879 is a deficient number, since it is larger than the sum of its proper divisors (1).

165112879 is an equidigital number, since it uses as much as digits as its factorization.

165112879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 40.

The square root of 165112879 is about 12849.6256365701. The cubic root of 165112879 is about 548.6057013745.

The spelling of 165112879 in words is "one hundred sixty-five million, one hundred twelve thousand, eight hundred seventy-nine".