198219804 has 24 divisors (see below), whose sum is σ = 475014288. Its totient is φ = 64287360.

The previous prime is 198219803. The next prime is 198219817. The reversal of 198219804 is 408912891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198219803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222777 + ... + 223664.

It is an arithmetic number, because the mean of its divisors is an integer number (19792262).

Almost surely, 2^198219804 is an apocalyptic number.

It is an amenable number.

198219804 is an abundant number, since it is smaller than the sum of its proper divisors (276794484).

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

198219804 is a wasteful number, since it uses less digits than its factorization.

198219804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446485 (or 446483 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 198219804 is about 14079.0555080943. The cubic root of 198219804 is about 583.0632657517.

The spelling of 198219804 in words is "one hundred ninety-eight million, two hundred nineteen thousand, eight hundred four".