13813580813 has 2 divisors, whose sum is σ = 13813580814. Its totient is φ = 13813580812.

The previous prime is 13813580789. The next prime is 13813580857. The reversal of 13813580813 is 31808531831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8723186404 + 5090394409 = 93398^2 + 71347^2 .

It is a cyclic number.

It is not a de Polignac number, because 13813580813 - 2¹² = 13813576717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13813580863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6906790406 + 6906790407.

It is an arithmetic number, because the mean of its divisors is an integer number (6906790407).

Almost surely, 2^13813580813 is an apocalyptic number.

It is an amenable number.

13813580813 is a deficient number, since it is larger than the sum of its proper divisors (1).

13813580813 is an equidigital number, since it uses as much as digits as its factorization.

13813580813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 13813580813 in words is "thirteen billion, eight hundred thirteen million, five hundred eighty thousand, eight hundred thirteen".