1158809328 has 100 divisors (see below), whose sum is σ = 3386882928. Its totient is φ = 382475520.

The previous prime is 1158809321. The next prime is 1158809359. The reversal of 1158809328 is 8239088511.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158809321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 129148 + ... + 137828.

Almost surely, 2^1158809328 is an apocalyptic number.

1158809328 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 1158809328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1693441464).

1158809328 is an abundant number, since it is smaller than the sum of its proper divisors (2228073600).

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

1158809328 is a wasteful number, since it uses less digits than its factorization.

1158809328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8804 (or 8789 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 1158809328 is about 34041.2885772557. The cubic root of 1158809328 is about 1050.3579514277.

The spelling of 1158809328 in words is "one billion, one hundred fifty-eight million, eight hundred nine thousand, three hundred twenty-eight".