1319108356945 has 4 divisors (see below), whose sum is σ = 1582930028340. Its totient is φ = 1055286685552.

The previous prime is 1319108356933. The next prime is 1319108357053. The reversal of 1319108356945 is 5496538019131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 988226857216 + 330881499729 = 994096^2 + 575223^2 .

It is a cyclic number.

It is not a de Polignac number, because 1319108356945 - 2⁷ = 1319108356817 is a prime.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 131910835690 + ... + 131910835699.

It is an arithmetic number, because the mean of its divisors is an integer number (395732507085).

Almost surely, 2^{1319108356945} is an apocalyptic number.

It is an amenable number.

1319108356945 is a deficient number, since it is larger than the sum of its proper divisors (263821671395).

1319108356945 is an equidigital number, since it uses as much as digits as its factorization.

1319108356945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263821671394.

The product of its (nonzero) digits is 3499200, while the sum is 55.

The spelling of 1319108356945 in words is "one trillion, three hundred nineteen billion, one hundred eight million, three hundred fifty-six thousand, nine hundred forty-five".