1313563515389 has 2 divisors, whose sum is σ = 1313563515390. Its totient is φ = 1313563515388.

The previous prime is 1313563515307. The next prime is 1313563515391. The reversal of 1313563515389 is 9835153653131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1092165034489 + 221398480900 = 1045067^2 + 470530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313563515389 is a prime.

It is a super-2 number, since 2×1313563515389² (a number of 25 digits) contains 22 as substring.

Together with 1313563515391, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1313563515389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313563512389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656781757694 + 656781757695.

It is an arithmetic number, because the mean of its divisors is an integer number (656781757695).

Almost surely, 2^{1313563515389} is an apocalyptic number.

It is an amenable number.

1313563515389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313563515389 is an equidigital number, since it uses as much as digits as its factorization.

1313563515389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4374000, while the sum is 53.

The spelling of 1313563515389 in words is "one trillion, three hundred thirteen billion, five hundred sixty-three million, five hundred fifteen thousand, three hundred eighty-nine".