1161571584 has 72 divisors (see below), whose sum is σ = 3098475072. Its totient is φ = 386314240.

The previous prime is 1161571561. The next prime is 1161571601. The reversal of 1161571584 is 4851751611.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 398677 + ... + 401579.

It is an arithmetic number, because the mean of its divisors is an integer number (43034376).

Almost surely, 2^1161571584 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 1161571584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1549237536).

1161571584 is an abundant number, since it is smaller than the sum of its proper divisors (1936903488).

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

1161571584 is an equidigital number, since it uses as much as digits as its factorization.

1161571584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443 (or 3429 counting only the distinct ones).

The product of its digits is 33600, while the sum is 39.

The square root of 1161571584 is about 34081.8365702320. The cubic root of 1161571584 is about 1051.1918692569.

The spelling of 1161571584 in words is "one billion, one hundred sixty-one million, five hundred seventy-one thousand, five hundred eighty-four".