204197166 has 32 divisors (see below), whose sum is σ = 480466080. Its totient is φ = 64061568.

The previous prime is 204197159. The next prime is 204197177. The reversal of 204197166 is 661791402.

It is a self number, because there is not a number n which added to its sum of digits gives 204197166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110301 + ... + 112136.

It is an arithmetic number, because the mean of its divisors is an integer number (15014565).

Almost surely, 2^204197166 is an apocalyptic number.

204197166 is an abundant number, since it is smaller than the sum of its proper divisors (276268914).

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

204197166 is a wasteful number, since it uses less digits than its factorization.

204197166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222465 (or 222459 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 204197166 is about 14289.7573807255. The cubic root of 204197166 is about 588.8661225775.

The spelling of 204197166 in words is "two hundred four million, one hundred ninety-seven thousand, one hundred sixty-six".