138381404898 has 16 divisors (see below), whose sum is σ = 301923065376. Its totient is φ = 41933759040.

The previous prime is 138381404879. The next prime is 138381404899. The reversal of 138381404898 is 898404183831.

It is not an unprimeable number, because it can be changed into a prime (138381404899) 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, 1048343911 + ... + 1048344042.

It is an arithmetic number, because the mean of its divisors is an integer number (18870191586).

Almost surely, 2^138381404898 is an apocalyptic number.

138381404898 is an abundant number, since it is smaller than the sum of its proper divisors (163541660478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138381404898 is a wasteful number, since it uses less digits than its factorization.

138381404898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096687969.

The product of its (nonzero) digits is 5308416, while the sum is 57.

The spelling of 138381404898 in words is "one hundred thirty-eight billion, three hundred eighty-one million, four hundred four thousand, eight hundred ninety-eight".