13938609313 has 4 divisors (see below), whose sum is σ = 13938996528. Its totient is φ = 13938222100.

The previous prime is 13938609301. The next prime is 13938609317. The reversal of 13938609313 is 31390683931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31390683931 = 37 ⋅848396863.

It is a cyclic number.

It is not a de Polignac number, because 13938609313 - 2²⁵ = 13905054881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13938609317) 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, 133363 + ... + 213688.

It is an arithmetic number, because the mean of its divisors is an integer number (3484749132).

Almost surely, 2^13938609313 is an apocalyptic number.

It is an amenable number.

13938609313 is a deficient number, since it is larger than the sum of its proper divisors (387215).

13938609313 is an equidigital number, since it uses as much as digits as its factorization.

13938609313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387214.

The product of its (nonzero) digits is 314928, while the sum is 46.

The spelling of 13938609313 in words is "thirteen billion, nine hundred thirty-eight million, six hundred nine thousand, three hundred thirteen".