319444984913 has 2 divisors, whose sum is σ = 319444984914. Its totient is φ = 319444984912.

The previous prime is 319444984801. The next prime is 319444984921. The reversal of 319444984913 is 319489444913.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302557202704 + 16887782209 = 550052^2 + 129953^2 .

It is a cyclic number.

It is not a de Polignac number, because 319444984913 - 2³⁰ = 318371243089 is a prime.

It is not a weakly prime, because it can be changed into another prime (319444984513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159722492456 + 159722492457.

It is an arithmetic number, because the mean of its divisors is an integer number (159722492457).

Almost surely, 2^319444984913 is an apocalyptic number.

It is an amenable number.

319444984913 is a deficient number, since it is larger than the sum of its proper divisors (1).

319444984913 is an equidigital number, since it uses as much as digits as its factorization.

319444984913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13436928, while the sum is 59.

The spelling of 319444984913 in words is "three hundred nineteen billion, four hundred forty-four million, nine hundred eighty-four thousand, nine hundred thirteen".