138628580188 has 24 divisors (see below), whose sum is σ = 293566406112. Its totient is φ = 55917410304.

The previous prime is 138628580147. The next prime is 138628580213. The reversal of 138628580188 is 881085826831.

It is a super-2 number, since 2×138628580188² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145617781 + ... + 145618732.

It is an arithmetic number, because the mean of its divisors is an integer number (12231933588).

Almost surely, 2^138628580188 is an apocalyptic number.

It is an amenable number.

138628580188 is an abundant number, since it is smaller than the sum of its proper divisors (154937825924).

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

138628580188 is a wasteful number, since it uses less digits than its factorization.

138628580188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291236541 (or 291236539 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 58.

The spelling of 138628580188 in words is "one hundred thirty-eight billion, six hundred twenty-eight million, five hundred eighty thousand, one hundred eighty-eight".