138003876389 has 4 divisors (see below), whose sum is σ = 141733710924. Its totient is φ = 134274041856.

The previous prime is 138003876341. The next prime is 138003876421. The reversal of 138003876389 is 983678300831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128174740225 + 9829136164 = 358015^2 + 99142^2 .

It is a cyclic number.

It is not a de Polignac number, because 138003876389 - 2⁸ = 138003876133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138005876389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1864917212 + ... + 1864917285.

It is an arithmetic number, because the mean of its divisors is an integer number (35433427731).

Almost surely, 2^138003876389 is an apocalyptic number.

It is an amenable number.

138003876389 is a deficient number, since it is larger than the sum of its proper divisors (3729834535).

138003876389 is an equidigital number, since it uses as much as digits as its factorization.

138003876389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3729834534.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 138003876389 in words is "one hundred thirty-eight billion, three million, eight hundred seventy-six thousand, three hundred eighty-nine".