198222158 has 8 divisors (see below), whose sum is σ = 297398520. Its totient is φ = 99089320.

The previous prime is 198222151. The next prime is 198222179. The reversal of 198222158 is 851222891.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198222151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5348 + ... + 20616.

It is an arithmetic number, because the mean of its divisors is an integer number (37174815).

Almost surely, 2^198222158 is an apocalyptic number.

198222158 is a deficient number, since it is larger than the sum of its proper divisors (99176362).

198222158 is a wasteful number, since it uses less digits than its factorization.

198222158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21762.

The product of its digits is 23040, while the sum is 38.

The square root of 198222158 is about 14079.1391072040. The cubic root of 198222158 is about 583.0655738385.

The spelling of 198222158 in words is "one hundred ninety-eight million, two hundred twenty-two thousand, one hundred fifty-eight".