198539825188 has 12 divisors (see below), whose sum is σ = 347450881932. Its totient is φ = 99268144640.

The previous prime is 198539825147. The next prime is 198539825189. The reversal of 198539825188 is 881528935891.

198539825188 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 121376985664 + 77162839524 = 348392^2 + 277782^2 .

It is not an unprimeable number, because it can be changed into a prime (198539825189) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 170833 + ... + 652888.

It is an arithmetic number, because the mean of its divisors is an integer number (28954240161).

Almost surely, 2^198539825188 is an apocalyptic number.

It is an amenable number.

198539825188 is a deficient number, since it is larger than the sum of its proper divisors (148911056744).

198539825188 is a wasteful number, since it uses less digits than its factorization.

198539825188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883982 (or 883980 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 67.

The spelling of 198539825188 in words is "one hundred ninety-eight billion, five hundred thirty-nine million, eight hundred twenty-five thousand, one hundred eighty-eight".