1109391360 has 576 divisors, whose sum is σ = 4571199360. Its totient is φ = 227082240.

The previous prime is 1109391341. The next prime is 1109391377. The reversal of 1109391360 is 631939011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16558047 + ... + 16558113.

It is an arithmetic number, because the mean of its divisors is an integer number (7936110).

Almost surely, 2^1109391360 is an apocalyptic number.

1109391360 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 1109391360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2285599680).

1109391360 is an abundant number, since it is smaller than the sum of its proper divisors (3461808000).

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

1109391360 is a wasteful number, since it uses less digits than its factorization.

1109391360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 1109391360 is about 33307.5270772239. The cubic root of 1109391360 is about 1035.2095260652.

The spelling of 1109391360 in words is "one billion, one hundred nine million, three hundred ninety-one thousand, three hundred sixty".