319980435889 has 2 divisors, whose sum is σ = 319980435890. Its totient is φ = 319980435888.

The previous prime is 319980435883. The next prime is 319980436003. The reversal of 319980435889 is 988534089913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319555045264 + 425390625 = 565292^2 + 20625^2 .

It is a cyclic number.

It is not a de Polignac number, because 319980435889 - 2⁹ = 319980435377 is a prime.

It is not a weakly prime, because it can be changed into another prime (319980435883) 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, 159990217944 + 159990217945.

It is an arithmetic number, because the mean of its divisors is an integer number (159990217945).

Almost surely, 2^319980435889 is an apocalyptic number.

It is an amenable number.

319980435889 is a deficient number, since it is larger than the sum of its proper divisors (1).

319980435889 is an equidigital number, since it uses as much as digits as its factorization.

319980435889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67184640, while the sum is 67.

The spelling of 319980435889 in words is "three hundred nineteen billion, nine hundred eighty million, four hundred thirty-five thousand, eight hundred eighty-nine".