138888889164 has 60 divisors (see below), whose sum is σ = 364393995504. Its totient is φ = 46129131936.

The previous prime is 138888889159. The next prime is 138888889199. The reversal of 138888889164 is 461988888831.

138888889164 is a `hidden beast` number, since 1 + 388 + 8 + 8 + 8 + 89 + 164 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 138888889092 and 138888889101.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 684024 + ... + 863519.

Almost surely, 2^138888889164 is an apocalyptic number.

It is an amenable number.

138888889164 is an abundant number, since it is smaller than the sum of its proper divisors (225505106340).

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

138888889164 is a wasteful number, since it uses less digits than its factorization.

138888889164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547836 (or 1547825 counting only the distinct ones).

The product of its digits is 169869312, while the sum is 72.

The spelling of 138888889164 in words is "one hundred thirty-eight billion, eight hundred eighty-eight million, eight hundred eighty-nine thousand, one hundred sixty-four".