138698189982 has 24 divisors (see below), whose sum is σ = 327832085880. Its totient is φ = 42029754480.

The previous prime is 138698189963. The next prime is 138698189999. The reversal of 138698189982 is 289981896831.

138698189982 is a `hidden beast` number, since 1 + 386 + 9 + 81 + 8 + 99 + 82 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 138698189982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350247757 + ... + 350248152.

It is an arithmetic number, because the mean of its divisors is an integer number (13659670245).

Almost surely, 2^138698189982 is an apocalyptic number.

138698189982 is an abundant number, since it is smaller than the sum of its proper divisors (189133895898).

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

138698189982 is a wasteful number, since it uses less digits than its factorization.

138698189982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700495928 (or 700495925 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 72.

The spelling of 138698189982 in words is "one hundred thirty-eight billion, six hundred ninety-eight million, one hundred eighty-nine thousand, nine hundred eighty-two".