13691930813 has 6 divisors (see below), whose sum is σ = 15049808382. Its totient is φ = 12447209720.

The previous prime is 13691930807. The next prime is 13691930827. The reversal of 13691930813 is 31803919631.

It can be written as a sum of positive squares in only one way, i.e., 7105309849 + 6586620964 = 84293^2 + 81158^2 .

It is not a de Polignac number, because 13691930813 - 2⁸ = 13691930557 is a prime.

It is a super-3 number, since 3×13691930813³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13691930873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56578106 + ... + 56578347.

It is an arithmetic number, because the mean of its divisors is an integer number (2508301397).

Almost surely, 2^13691930813 is an apocalyptic number.

It is an amenable number.

13691930813 is a deficient number, since it is larger than the sum of its proper divisors (1357877569).

13691930813 is a wasteful number, since it uses less digits than its factorization.

13691930813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113156475 (or 113156464 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 13691930813 in words is "thirteen billion, six hundred ninety-one million, nine hundred thirty thousand, eight hundred thirteen".