198091122 has 16 divisors (see below), whose sum is σ = 396364320. Its totient is φ = 66000032.

The previous prime is 198091109. The next prime is 198091151. The reversal of 198091122 is 221190891.

198091122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9529 + ... + 22067.

It is an arithmetic number, because the mean of its divisors is an integer number (24772770).

Almost surely, 2^198091122 is an apocalyptic number.

198091122 is an abundant number, since it is smaller than the sum of its proper divisors (198273198).

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

198091122 is a wasteful number, since it uses less digits than its factorization.

198091122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15177.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 198091122 is about 14074.4847863075. The cubic root of 198091122 is about 582.9370657999.

The spelling of 198091122 in words is "one hundred ninety-eight million, ninety-one thousand, one hundred twenty-two".