138386713 has 2 divisors, whose sum is σ = 138386714. Its totient is φ = 138386712.

The previous prime is 138386711. The next prime is 138386719. The reversal of 138386713 is 317683831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133333209 + 5053504 = 11547^2 + 2248^2 .

It is an emirp because it is prime and its reverse (317683831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138386713 - 2¹ = 138386711 is a prime.

Together with 138386711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (138386711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69193356 + 69193357.

It is an arithmetic number, because the mean of its divisors is an integer number (69193357).

Almost surely, 2^138386713 is an apocalyptic number.

It is an amenable number.

138386713 is a deficient number, since it is larger than the sum of its proper divisors (1).

138386713 is an equidigital number, since it uses as much as digits as its factorization.

138386713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 138386713 is about 11763.7882078861. The cubic root of 138386713 is about 517.2471796722.

The spelling of 138386713 in words is "one hundred thirty-eight million, three hundred eighty-six thousand, seven hundred thirteen".