1315594391 has 2 divisors, whose sum is σ = 1315594392. Its totient is φ = 1315594390.

The previous prime is 1315594369. The next prime is 1315594403. The reversal of 1315594391 is 1934955131.

It is a strong prime.

It is an emirp because it is prime and its reverse (1934955131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315594391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315594361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657797195 + 657797196.

It is an arithmetic number, because the mean of its divisors is an integer number (657797196).

Almost surely, 2^1315594391 is an apocalyptic number.

1315594391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315594391 is an equidigital number, since it uses as much as digits as its factorization.

1315594391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72900, while the sum is 41.

The square root of 1315594391 is about 36271.1233765926. The cubic root of 1315594391 is about 1095.7395505831.

The spelling of 1315594391 in words is "one billion, three hundred fifteen million, five hundred ninety-four thousand, three hundred ninety-one".