198978384 has 40 divisors (see below), whose sum is σ = 560758752. Its totient is φ = 60296320.

The previous prime is 198978379. The next prime is 198978407. The reversal of 198978384 is 483879891.

198978384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 187899 + ... + 188954.

Almost surely, 2^198978384 is an apocalyptic number.

It is an amenable number.

198978384 is an abundant number, since it is smaller than the sum of its proper divisors (361780368).

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

198978384 is a wasteful number, since it uses less digits than its factorization.

198978384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376875 (or 376869 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 57.

The square root of 198978384 is about 14105.9698000527. The cubic root of 198978384 is about 583.8061062711.

The spelling of 198978384 in words is "one hundred ninety-eight million, nine hundred seventy-eight thousand, three hundred eighty-four".