194166198 has 24 divisors (see below), whose sum is σ = 421399368. Its totient is φ = 64613472.

The previous prime is 194166157. The next prime is 194166241. The reversal of 194166198 is 891661491.

194166198 is a `hidden beast` number, since 19 + 4 + 16 + 619 + 8 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2365 + ... + 19847.

It is an arithmetic number, because the mean of its divisors is an integer number (17558307).

Almost surely, 2^194166198 is an apocalyptic number.

194166198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

194166198 is an abundant number, since it is smaller than the sum of its proper divisors (227233170).

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

194166198 is a wasteful number, since it uses less digits than its factorization.

194166198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18108 (or 18105 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 194166198 is about 13934.3531604449. The cubic root of 194166198 is about 579.0613016430.

The spelling of 194166198 in words is "one hundred ninety-four million, one hundred sixty-six thousand, one hundred ninety-eight".