2079965809 has 2 divisors, whose sum is σ = 2079965810. Its totient is φ = 2079965808.

The previous prime is 2079965791. The next prime is 2079965813. The reversal of 2079965809 is 9085699702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1287374400 + 792591409 = 35880^2 + 28153^2 .

It is a cyclic number.

It is not a de Polignac number, because 2079965809 - 2⁷ = 2079965681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2079965809.

It is not a weakly prime, because it can be changed into another prime (2079965879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039982904 + 1039982905.

It is an arithmetic number, because the mean of its divisors is an integer number (1039982905).

Almost surely, 2^2079965809 is an apocalyptic number.

It is an amenable number.

2079965809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2079965809 is an equidigital number, since it uses as much as digits as its factorization.

2079965809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The square root of 2079965809 is about 45606.6421587909. The cubic root of 2079965809 is about 1276.4938653681.

The spelling of 2079965809 in words is "two billion, seventy-nine million, nine hundred sixty-five thousand, eight hundred nine".