1109605320 has 192 divisors, whose sum is σ = 3919219200. Its totient is φ = 271226880.

The previous prime is 1109605319. The next prime is 1109605327. The reversal of 1109605320 is 235069011.

It is not an unprimeable number, because it can be changed into a prime (1109605327) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 209424 + ... + 214656.

It is an arithmetic number, because the mean of its divisors is an integer number (20412600).

Almost surely, 2^1109605320 is an apocalyptic number.

1109605320 is a gapful number since it is divisible by the number (10) 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 1109605320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1959609600).

1109605320 is an abundant number, since it is smaller than the sum of its proper divisors (2809613880).

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

1109605320 is a wasteful number, since it uses less digits than its factorization.

1109605320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5300 (or 5293 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 1109605320 is about 33310.7388089787. The cubic root of 1109605320 is about 1035.2760728224.

The spelling of 1109605320 in words is "one billion, one hundred nine million, six hundred five thousand, three hundred twenty".