2168239079 has 2 divisors, whose sum is σ = 2168239080. Its totient is φ = 2168239078.

The previous prime is 2168239069. The next prime is 2168239111. The reversal of 2168239079 is 9709328612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2168239079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2168239019) 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, 1084119539 + 1084119540.

It is an arithmetic number, because the mean of its divisors is an integer number (1084119540).

Almost surely, 2^2168239079 is an apocalyptic number.

2168239079 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168239079 is an equidigital number, since it uses as much as digits as its factorization.

2168239079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 2168239079 is about 46564.3541671094. The cubic root of 2168239079 is about 1294.3022988472.

The spelling of 2168239079 in words is "two billion, one hundred sixty-eight million, two hundred thirty-nine thousand, seventy-nine".