13398804613 has 4 divisors (see below), whose sum is σ = 13401478188. Its totient is φ = 13396131040.

The previous prime is 13398804607. The next prime is 13398804631. The reversal of 13398804613 is 31640889331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31640889331 = 419 ⋅75515249.

It can be written as a sum of positive squares in 2 ways, for example, as 5062749409 + 8336055204 = 71153^2 + 91302^2 .

It is a cyclic number.

It is not a de Polignac number, because 13398804613 - 2³³ = 4808870021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13398814613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1329256 + ... + 1339297.

It is an arithmetic number, because the mean of its divisors is an integer number (3350369547).

Almost surely, 2^13398804613 is an apocalyptic number.

It is an amenable number.

13398804613 is a deficient number, since it is larger than the sum of its proper divisors (2673575).

13398804613 is an equidigital number, since it uses as much as digits as its factorization.

13398804613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673574.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 13398804613 in words is "thirteen billion, three hundred ninety-eight million, eight hundred four thousand, six hundred thirteen".