13138579 has 2 divisors, whose sum is σ = 13138580. Its totient is φ = 13138578.

The previous prime is 13138571. The next prime is 13138591. The reversal of 13138579 is 97583131.

It is a happy number.

13138579 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (97583131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13138579 - 2³ = 13138571 is a prime.

It is not a weakly prime, because it can be changed into another prime (13138571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6569289 + 6569290.

It is an arithmetic number, because the mean of its divisors is an integer number (6569290).

Almost surely, 2^13138579 is an apocalyptic number.

13138579 is a deficient number, since it is larger than the sum of its proper divisors (1).

13138579 is an equidigital number, since it uses as much as digits as its factorization.

13138579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The square root of 13138579 is about 3624.7177821177. The cubic root of 13138579 is about 235.9660189990.

The spelling of 13138579 in words is "thirteen million, one hundred thirty-eight thousand, five hundred seventy-nine".