1313927437 has 2 divisors, whose sum is σ = 1313927438. Its totient is φ = 1313927436.

The previous prime is 1313927423. The next prime is 1313927453. The reversal of 1313927437 is 7347293131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1021825156 + 292102281 = 31966^2 + 17091^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313927437 - 2¹⁹ = 1313403149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1313927437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313922437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656963718 + 656963719.

It is an arithmetic number, because the mean of its divisors is an integer number (656963719).

Almost surely, 2^1313927437 is an apocalyptic number.

It is an amenable number.

1313927437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313927437 is an equidigital number, since it uses as much as digits as its factorization.

1313927437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 40.

The square root of 1313927437 is about 36248.1370141970. The cubic root of 1313927437 is about 1095.2765610176.

The spelling of 1313927437 in words is "one billion, three hundred thirteen million, nine hundred twenty-seven thousand, four hundred thirty-seven".