198865380804 has 48 divisors (see below), whose sum is σ = 486136713216. Its totient is φ = 63192650400.

The previous prime is 198865380757. The next prime is 198865380817. The reversal of 198865380804 is 408083568891.

198865380804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 3964512 + ... + 4014359.

It is an arithmetic number, because the mean of its divisors is an integer number (10127848192).

Almost surely, 2^198865380804 is an apocalyptic number.

It is an amenable number.

198865380804 is an abundant number, since it is smaller than the sum of its proper divisors (287271332412).

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

198865380804 is a wasteful number, since it uses less digits than its factorization.

198865380804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7978976 (or 7978974 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 60.

The spelling of 198865380804 in words is "one hundred ninety-eight billion, eight hundred sixty-five million, three hundred eighty thousand, eight hundred four".