138569318819 has 2 divisors, whose sum is σ = 138569318820. Its totient is φ = 138569318818.

The previous prime is 138569318809. The next prime is 138569318917. The reversal of 138569318819 is 918813965831.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138569318819 is a prime.

It is a super-2 number, since 2×138569318819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (138569318809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69284659409 + 69284659410.

It is an arithmetic number, because the mean of its divisors is an integer number (69284659410).

Almost surely, 2^138569318819 is an apocalyptic number.

138569318819 is a deficient number, since it is larger than the sum of its proper divisors (1).

138569318819 is an equidigital number, since it uses as much as digits as its factorization.

138569318819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 62.

The spelling of 138569318819 in words is "one hundred thirty-eight billion, five hundred sixty-nine million, three hundred eighteen thousand, eight hundred nineteen".