138595319 has 2 divisors, whose sum is σ = 138595320. Its totient is φ = 138595318.

The previous prime is 138595283. The next prime is 138595333. The reversal of 138595319 is 913595831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138595319 is a prime.

It is a super-2 number, since 2×138595319² = 38417324897423522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138595319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138595349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69297659 + 69297660.

It is an arithmetic number, because the mean of its divisors is an integer number (69297660).

Almost surely, 2^138595319 is an apocalyptic number.

138595319 is a deficient number, since it is larger than the sum of its proper divisors (1).

138595319 is an equidigital number, since it uses as much as digits as its factorization.

138595319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 44.

The square root of 138595319 is about 11772.6513156553. The cubic root of 138595319 is about 517.5069509829.

The spelling of 138595319 in words is "one hundred thirty-eight million, five hundred ninety-five thousand, three hundred nineteen".