1089585488 has 80 divisors (see below), whose sum is σ = 2283603840. Its totient is φ = 503535104.

The previous prime is 1089585479. The next prime is 1089585491. The reversal of 1089585488 is 8845859801.

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 15 ways as a sum of consecutive naturals, for example, 6524381 + ... + 6524547.

It is an arithmetic number, because the mean of its divisors is an integer number (28545048).

Almost surely, 2^1089585488 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 1089585488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1141801920).

1089585488 is an abundant number, since it is smaller than the sum of its proper divisors (1194018352).

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

1089585488 is an equidigital number, since it uses as much as digits as its factorization.

1089585488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 56.

The square root of 1089585488 is about 33008.8698382723. The cubic root of 1089585488 is about 1029.0119937919.

The spelling of 1089585488 in words is "one billion, eighty-nine million, five hundred eighty-five thousand, four hundred eighty-eight".