998189568 has 240 divisors, whose sum is σ = 3056429376. Its totient is φ = 325140480.

The previous prime is 998189551. The next prime is 998189603. The reversal of 998189568 is 865981899.

998189568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 8833480 + ... + 8833592.

Almost surely, 2^998189568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998189568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1528214688).

998189568 is an abundant number, since it is smaller than the sum of its proper divisors (2058239808).

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

998189568 is an equidigital number, since it uses as much as digits as its factorization.

998189568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 189 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 63.

The square root of 998189568 is about 31594.1381904935. The cubic root of 998189568 is about 999.3961581150.

The spelling of 998189568 in words is "nine hundred ninety-eight million, one hundred eighty-nine thousand, five hundred sixty-eight".