138285013 has 2 divisors, whose sum is σ = 138285014. Its totient is φ = 138285012.

The previous prime is 138285011. The next prime is 138285023. The reversal of 138285013 is 310582831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126292644 + 11992369 = 11238^2 + 3463^2 .

It is a cyclic number.

It is not a de Polignac number, because 138285013 - 2¹ = 138285011 is a prime.

Together with 138285011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138285011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69142506 + 69142507.

It is an arithmetic number, because the mean of its divisors is an integer number (69142507).

Almost surely, 2^138285013 is an apocalyptic number.

It is an amenable number.

138285013 is a deficient number, since it is larger than the sum of its proper divisors (1).

138285013 is an equidigital number, since it uses as much as digits as its factorization.

138285013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 138285013 is about 11759.4648262580. The cubic root of 138285013 is about 517.1204407956.

The spelling of 138285013 in words is "one hundred thirty-eight million, two hundred eighty-five thousand, thirteen".