1317643013 has 2 divisors, whose sum is σ = 1317643014. Its totient is φ = 1317643012.

The previous prime is 1317642983. The next prime is 1317643049. The reversal of 1317643013 is 3103467131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1209857089 + 107785924 = 34783^2 + 10382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1317643013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317643513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658821506 + 658821507.

It is an arithmetic number, because the mean of its divisors is an integer number (658821507).

Almost surely, 2^1317643013 is an apocalyptic number.

It is an amenable number.

1317643013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317643013 is an equidigital number, since it uses as much as digits as its factorization.

1317643013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 1317643013 is about 36299.3527903735. The cubic root of 1317643013 is about 1096.3080115024.

The spelling of 1317643013 in words is "one billion, three hundred seventeen million, six hundred forty-three thousand, thirteen".