1319499613 has 2 divisors, whose sum is σ = 1319499614. Its totient is φ = 1319499612.

The previous prime is 1319499611. The next prime is 1319499691. The reversal of 1319499613 is 3169949131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999697924 + 319801689 = 31618^2 + 17883^2 .

It is a cyclic number.

It is not a de Polignac number, because 1319499613 - 2¹ = 1319499611 is a prime.

Together with 1319499611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1319499611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659749806 + 659749807.

It is an arithmetic number, because the mean of its divisors is an integer number (659749807).

Almost surely, 2^1319499613 is an apocalyptic number.

It is an amenable number.

1319499613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319499613 is an equidigital number, since it uses as much as digits as its factorization.

1319499613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 46.

The square root of 1319499613 is about 36324.9172469808. The cubic root of 1319499613 is about 1096.8226805487.

The spelling of 1319499613 in words is "one billion, three hundred nineteen million, four hundred ninety-nine thousand, six hundred thirteen".