1198791328 has 96 divisors (see below), whose sum is σ = 2880783360. Its totient is φ = 479969280.

The previous prime is 1198791317. The next prime is 1198791371. The reversal of 1198791328 is 8231978911.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198400 + ... + 204352.

It is an arithmetic number, because the mean of its divisors is an integer number (30008160).

Almost surely, 2^1198791328 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 1198791328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1440391680).

1198791328 is an abundant number, since it is smaller than the sum of its proper divisors (1681992032).

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

1198791328 is a wasteful number, since it uses less digits than its factorization.

1198791328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6030 (or 6022 counting only the distinct ones).

The product of its digits is 217728, while the sum is 49.

The square root of 1198791328 is about 34623.5660786118. The cubic root of 1198791328 is about 1062.3016699802.

The spelling of 1198791328 in words is "one billion, one hundred ninety-eight million, seven hundred ninety-one thousand, three hundred twenty-eight".