138769873919 has 4 divisors (see below), whose sum is σ = 138970699320. Its totient is φ = 138569048520.

The previous prime is 138769873901. The next prime is 138769873927. The reversal of 138769873919 is 919378967831.

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

It is a cyclic number.

It is not a de Polignac number, because 138769873919 - 2¹⁶ = 138769808383 is a prime.

It is a super-2 number, since 2×138769873919² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138769873999) 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, 100411664 + ... + 100413045.

It is an arithmetic number, because the mean of its divisors is an integer number (34742674830).

Almost surely, 2^138769873919 is an apocalyptic number.

138769873919 is a deficient number, since it is larger than the sum of its proper divisors (200825401).

138769873919 is an equidigital number, since it uses as much as digits as its factorization.

138769873919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200825400.

The product of its digits is 123451776, while the sum is 71.

The spelling of 138769873919 in words is "one hundred thirty-eight billion, seven hundred sixty-nine million, eight hundred seventy-three thousand, nine hundred nineteen".