1291602413 has 2 divisors, whose sum is σ = 1291602414. Its totient is φ = 1291602412.

The previous prime is 1291602371. The next prime is 1291602427. The reversal of 1291602413 is 3142061921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1241998564 + 49603849 = 35242^2 + 7043^2 .

It is a cyclic number.

It is not a de Polignac number, because 1291602413 - 2⁸ = 1291602157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1291602313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645801206 + 645801207.

It is an arithmetic number, because the mean of its divisors is an integer number (645801207).

Almost surely, 2^1291602413 is an apocalyptic number.

It is an amenable number.

1291602413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291602413 is an equidigital number, since it uses as much as digits as its factorization.

1291602413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1291602413 is about 35938.8705025631. The cubic root of 1291602413 is about 1089.0377876028.

The spelling of 1291602413 in words is "one billion, two hundred ninety-one million, six hundred two thousand, four hundred thirteen".