1315995208489 has 4 divisors (see below), whose sum is σ = 1417225609156. Its totient is φ = 1214764807824.

The previous prime is 1315995208457. The next prime is 1315995208511. The reversal of 1315995208489 is 9848025995131.

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 670048659225 + 645946549264 = 818565^2 + 803708^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315995208489 - 2⁵ = 1315995208457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315995208489.

It is not an unprimeable number, because it can be changed into a prime (1315995208589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50615200314 + ... + 50615200339.

It is an arithmetic number, because the mean of its divisors is an integer number (354306402289).

Almost surely, 2^{1315995208489} is an apocalyptic number.

It is an amenable number.

1315995208489 is a deficient number, since it is larger than the sum of its proper divisors (101230400667).

1315995208489 is a wasteful number, since it uses less digits than its factorization.

1315995208489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101230400666.

The product of its (nonzero) digits is 27993600, while the sum is 64.

The spelling of 1315995208489 in words is "one trillion, three hundred fifteen billion, nine hundred ninety-five million, two hundred eight thousand, four hundred eighty-nine".