1313487919 has 2 divisors, whose sum is σ = 1313487920. Its totient is φ = 1313487918.

The previous prime is 1313487893. The next prime is 1313487997. The reversal of 1313487919 is 9197843131.

It is a weak prime.

It is an emirp because it is prime and its reverse (9197843131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313487919 - 2²⁹ = 776617007 is a prime.

It is a super-2 number, since 2×1313487919² = 3450501026717901122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313487719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656743959 + 656743960.

It is an arithmetic number, because the mean of its divisors is an integer number (656743960).

Almost surely, 2^1313487919 is an apocalyptic number.

1313487919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313487919 is an equidigital number, since it uses as much as digits as its factorization.

1313487919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 46.

The square root of 1313487919 is about 36242.0738782979. The cubic root of 1313487919 is about 1095.1544214847.

The spelling of 1313487919 in words is "one billion, three hundred thirteen million, four hundred eighty-seven thousand, nine hundred nineteen".