138242079319 has 2 divisors, whose sum is σ = 138242079320. Its totient is φ = 138242079318.

The previous prime is 138242079317. The next prime is 138242079331. The reversal of 138242079319 is 913970242831.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (913970242831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138242079319 - 2¹ = 138242079317 is a prime.

It is a super-2 number, since 2×138242079319² (a number of 23 digits) contains 22 as substring.

Together with 138242079317, 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 (138242079317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69121039659 + 69121039660.

It is an arithmetic number, because the mean of its divisors is an integer number (69121039660).

Almost surely, 2^138242079319 is an apocalyptic number.

138242079319 is a deficient number, since it is larger than the sum of its proper divisors (1).

138242079319 is an equidigital number, since it uses as much as digits as its factorization.

138242079319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 138242079319 in words is "one hundred thirty-eight billion, two hundred forty-two million, seventy-nine thousand, three hundred nineteen".