138836396019 has 8 divisors (see below), whose sum is σ = 185567800720. Its totient is φ = 92331294336.

The previous prime is 138836395993. The next prime is 138836396021. The reversal of 138836396019 is 910693638831.

It is a happy number.

138836396019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138836396019 - 2¹⁵ = 138836363251 is a prime.

It is a super-2 number, since 2×138836396019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138836396019.

It is not an unprimeable number, because it can be changed into a prime (138836396099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56574322 + ... + 56576775.

It is an arithmetic number, because the mean of its divisors is an integer number (23195975090).

Almost surely, 2^138836396019 is an apocalyptic number.

138836396019 is a deficient number, since it is larger than the sum of its proper divisors (46731404701).

138836396019 is a wasteful number, since it uses less digits than its factorization.

138836396019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113151509.

The product of its (nonzero) digits is 5038848, while the sum is 57.

The spelling of 138836396019 in words is "one hundred thirty-eight billion, eight hundred thirty-six million, three hundred ninety-six thousand, nineteen".