1159640832 has 144 divisors (see below), whose sum is σ = 3713212160. Its totient is φ = 313860096.

The previous prime is 1159640821. The next prime is 1159640849. The reversal of 1159640832 is 2380469511.

It is a congruent number.

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, 96468 + ... + 107820.

Almost surely, 2^1159640832 is an apocalyptic number.

1159640832 is a gapful number since it is divisible by the number (12) 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 1159640832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1856606080).

1159640832 is an abundant number, since it is smaller than the sum of its proper divisors (2553571328).

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

1159640832 is a wasteful number, since it uses less digits than its factorization.

1159640832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11398 (or 11384 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 1159640832 is about 34053.4995558459. The cubic root of 1159640832 is about 1050.6091195888.

The spelling of 1159640832 in words is "one billion, one hundred fifty-nine million, six hundred forty thousand, eight hundred thirty-two".