13138271989 has 2 divisors, whose sum is σ = 13138271990. Its totient is φ = 13138271988.

The previous prime is 13138271983. The next prime is 13138272011. The reversal of 13138271989 is 98917283131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13100633764 + 37638225 = 114458^2 + 6135^2 .

It is a cyclic number.

It is not a de Polignac number, because 13138271989 - 2¹¹ = 13138269941 is a prime.

It is a super-2 number, since 2×13138271989² (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 (13138271983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6569135994 + 6569135995.

It is an arithmetic number, because the mean of its divisors is an integer number (6569135995).

Almost surely, 2^13138271989 is an apocalyptic number.

It is an amenable number.

13138271989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13138271989 is an equidigital number, since it uses as much as digits as its factorization.

13138271989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 52.

The spelling of 13138271989 in words is "thirteen billion, one hundred thirty-eight million, two hundred seventy-one thousand, nine hundred eighty-nine".