1291584013 has 2 divisors, whose sum is σ = 1291584014. Its totient is φ = 1291584012.

The previous prime is 1291583981. The next prime is 1291584029. The reversal of 1291584013 is 3104851921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1229063364 + 62520649 = 35058^2 + 7907^2 .

It is a cyclic number.

It is not a de Polignac number, because 1291584013 - 2⁵ = 1291583981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1291584013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1291584913) 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, 645792006 + 645792007.

It is an arithmetic number, because the mean of its divisors is an integer number (645792007).

Almost surely, 2^1291584013 is an apocalyptic number.

It is an amenable number.

1291584013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291584013 is an equidigital number, since it uses as much as digits as its factorization.

1291584013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1291584013 is about 35938.6145114138. The cubic root of 1291584013 is about 1089.0326161480.

The spelling of 1291584013 in words is "one billion, two hundred ninety-one million, five hundred eighty-four thousand, thirteen".