198538599536 has 40 divisors (see below), whose sum is σ = 393638287680. Its totient is φ = 96970887936.

The previous prime is 198538599517. The next prime is 198538599577. The reversal of 198538599536 is 635995835891.

198538599536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 198538599536.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317000 + ... + 705383.

It is an arithmetic number, because the mean of its divisors is an integer number (9840957192).

Almost surely, 2^198538599536 is an apocalyptic number.

198538599536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

198538599536 is a deficient number, since it is larger than the sum of its proper divisors (195099688144).

198538599536 is a wasteful number, since it uses less digits than its factorization.

198538599536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022673 (or 1022667 counting only the distinct ones).

The product of its digits is 314928000, while the sum is 71.

The spelling of 198538599536 in words is "one hundred ninety-eight billion, five hundred thirty-eight million, five hundred ninety-nine thousand, five hundred thirty-six".