138888144519 has 8 divisors (see below), whose sum is σ = 185190241920. Its totient is φ = 92589071736.

The previous prime is 138888144511. The next prime is 138888144529. The reversal of 138888144519 is 915441888831.

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

It is not a de Polignac number, because 138888144519 - 2³ = 138888144511 is a prime.

It is a super-2 number, since 2×138888144519² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138888144511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646747 + ... + 834300.

It is an arithmetic number, because the mean of its divisors is an integer number (23148780240).

Almost surely, 2^138888144519 is an apocalyptic number.

138888144519 is a deficient number, since it is larger than the sum of its proper divisors (46302097401).

138888144519 is a wasteful number, since it uses less digits than its factorization.

138888144519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512309.

The product of its digits is 8847360, while the sum is 60.

The spelling of 138888144519 in words is "one hundred thirty-eight billion, eight hundred eighty-eight million, one hundred forty-four thousand, five hundred nineteen".