198118822 has 8 divisors (see below), whose sum is σ = 324194472. Its totient is φ = 90054000.

The previous prime is 198118819. The next prime is 198118829. The reversal of 198118822 is 228811891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198118829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4502679 + ... + 4502722.

It is an arithmetic number, because the mean of its divisors is an integer number (40524309).

Almost surely, 2^198118822 is an apocalyptic number.

198118822 is a deficient number, since it is larger than the sum of its proper divisors (126075650).

198118822 is a wasteful number, since it uses less digits than its factorization.

198118822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9005414.

The product of its digits is 18432, while the sum is 40.

The square root of 198118822 is about 14075.4688021394. The cubic root of 198118822 is about 582.9642361310.

The spelling of 198118822 in words is "one hundred ninety-eight million, one hundred eighteen thousand, eight hundred twenty-two".