1163399328 has 192 divisors, whose sum is σ = 4176587520. Its totient is φ = 306809856.

The previous prime is 1163399311. The next prime is 1163399339. The reversal of 1163399328 is 8239933611.

1163399328 is a `hidden beast` number, since 1 + 1 + 633 + 9 + 9 + 3 + 2 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71226 + ... + 86022.

It is an arithmetic number, because the mean of its divisors is an integer number (21753060).

Almost surely, 2^1163399328 is an apocalyptic number.

1163399328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1163399328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2088293760).

1163399328 is an abundant number, since it is smaller than the sum of its proper divisors (3013188192).

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

1163399328 is a wasteful number, since it uses less digits than its factorization.

1163399328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14836 (or 14822 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 1163399328 is about 34108.6400784317. The cubic root of 1163399328 is about 1051.7429338104.

The spelling of 1163399328 in words is "one billion, one hundred sixty-three million, three hundred ninety-nine thousand, three hundred twenty-eight".