198984366 has 96 divisors (see below), whose sum is σ = 509483520. Its totient is φ = 54954432.

The previous prime is 198984353. The next prime is 198984377. The reversal of 198984366 is 663489891.

198984366 is a `hidden beast` number, since 198 + 98 + 4 + 366 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 554095 + ... + 554453.

It is an arithmetic number, because the mean of its divisors is an integer number (5307120).

Almost surely, 2^198984366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198984366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254741760).

198984366 is an abundant number, since it is smaller than the sum of its proper divisors (310499154).

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

198984366 is a wasteful number, since it uses less digits than its factorization.

198984366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 507 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 198984366 is about 14106.1818363440. The cubic root of 198984366 is about 583.8119566439.

The spelling of 198984366 in words is "one hundred ninety-eight million, nine hundred eighty-four thousand, three hundred sixty-six".