198543996 has 72 divisors (see below), whose sum is σ = 603774080. Its totient is φ = 53739936.

The previous prime is 198543979. The next prime is 198544009. The reversal of 198543996 is 699345891.

198543996 is a `hidden beast` number, since 1 + 9 + 8 + 543 + 9 + 96 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15946 + ... + 25521.

Almost surely, 2^198543996 is an apocalyptic number.

It is an amenable number.

198543996 is an abundant number, since it is smaller than the sum of its proper divisors (405230084).

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

198543996 is a wasteful number, since it uses less digits than its factorization.

198543996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41503 (or 41498 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 198543996 is about 14090.5640767146. The cubic root of 198543996 is about 583.3809627141.

The spelling of 198543996 in words is "one hundred ninety-eight million, five hundred forty-three thousand, nine hundred ninety-six".