1109904768 has 320 divisors, whose sum is σ = 3877362720. Its totient is φ = 308551680.

The previous prime is 1109904743. The next prime is 1109904769. The reversal of 1109904768 is 8674099011.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109904769) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2975430 + ... + 2975802.

Almost surely, 2^1109904768 is an apocalyptic number.

1109904768 is a gapful number since it is divisible by the number (18) 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 1109904768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1938681360).

1109904768 is an abundant number, since it is smaller than the sum of its proper divisors (2767457952).

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

1109904768 is an equidigital number, since it uses as much as digits as its factorization.

1109904768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1109904768 is about 33315.2332724836. The cubic root of 1109904768 is about 1035.3691940613.

The spelling of 1109904768 in words is "one billion, one hundred nine million, nine hundred four thousand, seven hundred sixty-eight".