1313187653 has 2 divisors, whose sum is σ = 1313187654. Its totient is φ = 1313187652.

The previous prime is 1313187611. The next prime is 1313187677. The reversal of 1313187653 is 3567813131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 696062689 + 617124964 = 26383^2 + 24842^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313187653 - 2⁸ = 1313187397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313117653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656593826 + 656593827.

It is an arithmetic number, because the mean of its divisors is an integer number (656593827).

Almost surely, 2^1313187653 is an apocalyptic number.

It is an amenable number.

1313187653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313187653 is an equidigital number, since it uses as much as digits as its factorization.

1313187653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 1313187653 is about 36237.9311357588. The cubic root of 1313187653 is about 1095.0709636182.

The spelling of 1313187653 in words is "one billion, three hundred thirteen million, one hundred eighty-seven thousand, six hundred fifty-three".