198904316195 has 32 divisors (see below), whose sum is σ = 261648878400. Its totient is φ = 144259914240.

The previous prime is 198904316189. The next prime is 198904316197. The reversal of 198904316195 is 591613409891.

198904316195 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198904316195 - 2²² = 198900121891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198904316195.

It is not an unprimeable number, because it can be changed into a prime (198904316197) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2647256 + ... + 2721354.

It is an arithmetic number, because the mean of its divisors is an integer number (8176527450).

Almost surely, 2^198904316195 is an apocalyptic number.

198904316195 is a deficient number, since it is larger than the sum of its proper divisors (62744562205).

198904316195 is a wasteful number, since it uses less digits than its factorization.

198904316195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74855.

The product of its (nonzero) digits is 2099520, while the sum is 56.

The spelling of 198904316195 in words is "one hundred ninety-eight billion, nine hundred four million, three hundred sixteen thousand, one hundred ninety-five".