1109112844 has 72 divisors (see below), whose sum is σ = 2410394112. Its totient is φ = 443681280.

The previous prime is 1109112839. The next prime is 1109112847. The reversal of 1109112844 is 4482119011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109112847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 421854 + ... + 424474.

It is an arithmetic number, because the mean of its divisors is an integer number (33477696).

Almost surely, 2^1109112844 is an apocalyptic number.

1109112844 is a gapful number since it is divisible by the number (14) 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 1109112844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1205197056).

1109112844 is an abundant number, since it is smaller than the sum of its proper divisors (1301281268).

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

1109112844 is a wasteful number, since it uses less digits than its factorization.

1109112844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783 (or 2774 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 1109112844 is about 33303.3458379184. The cubic root of 1109112844 is about 1035.1228880046.

The spelling of 1109112844 in words is "one billion, one hundred nine million, one hundred twelve thousand, eight hundred forty-four".