13789794637 has 2 divisors, whose sum is σ = 13789794638. Its totient is φ = 13789794636.

The previous prime is 13789794581. The next prime is 13789794643. The reversal of 13789794637 is 73649798731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13609322281 + 180472356 = 116659^2 + 13434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13789794637 is a prime.

It is a super-2 number, since 2×13789794637² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13789794937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6894897318 + 6894897319.

It is an arithmetic number, because the mean of its divisors is an integer number (6894897319).

Almost surely, 2^13789794637 is an apocalyptic number.

It is an amenable number.

13789794637 is a deficient number, since it is larger than the sum of its proper divisors (1).

13789794637 is an equidigital number, since it uses as much as digits as its factorization.

13789794637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48009024, while the sum is 64.

It can be divided in two parts, 1378979 and 4637, that added together give a triangular number (1383616 = T₁₆₆₃).

The spelling of 13789794637 in words is "thirteen billion, seven hundred eighty-nine million, seven hundred ninety-four thousand, six hundred thirty-seven".