198643196 has 24 divisors (see below), whose sum is σ = 359804256. Its totient is φ = 95892480.

The previous prime is 198643189. The next prime is 198643201. The reversal of 198643196 is 691346891.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 198643196.

It is a congruent number.

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, 9665 + ... + 22151.

It is an arithmetic number, because the mean of its divisors is an integer number (14991844).

Almost surely, 2^198643196 is an apocalyptic number.

It is an amenable number.

198643196 is a deficient number, since it is larger than the sum of its proper divisors (161161060).

198643196 is a wasteful number, since it uses less digits than its factorization.

198643196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12629 (or 12627 counting only the distinct ones).

The product of its digits is 279936, while the sum is 47.

The square root of 198643196 is about 14094.0837233216. The cubic root of 198643196 is about 583.4781061804.

The spelling of 198643196 in words is "one hundred ninety-eight million, six hundred forty-three thousand, one hundred ninety-six".