1315601893 has 2 divisors, whose sum is σ = 1315601894. Its totient is φ = 1315601892.

The previous prime is 1315601887. The next prime is 1315601897. The reversal of 1315601893 is 3981065131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1001532609 + 314069284 = 31647^2 + 17722^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315601893 - 2⁹ = 1315601381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315601897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657800946 + 657800947.

It is an arithmetic number, because the mean of its divisors is an integer number (657800947).

Almost surely, 2^1315601893 is an apocalyptic number.

It is an amenable number.

1315601893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315601893 is an equidigital number, since it uses as much as digits as its factorization.

1315601893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 1315601893 is about 36271.2267920455. The cubic root of 1315601893 is about 1095.7416333483.

The spelling of 1315601893 in words is "one billion, three hundred fifteen million, six hundred one thousand, eight hundred ninety-three".