1109589816 has 96 divisors (see below), whose sum is σ = 2964850560. Its totient is φ = 345950784.

The previous prime is 1109589809. The next prime is 1109589823. The reversal of 1109589816 is 6189859011.

It is an interprime number because it is at equal distance from previous prime (1109589809) and next prime (1109589823).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 718341 + ... + 719883.

It is an arithmetic number, because the mean of its divisors is an integer number (30883860).

Almost surely, 2^1109589816 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 1109589816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1482425280).

1109589816 is an abundant number, since it is smaller than the sum of its proper divisors (1855260744).

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

1109589816 is a wasteful number, since it uses less digits than its factorization.

1109589816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673 (or 1650 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 48.

The square root of 1109589816 is about 33310.5060904214. The cubic root of 1109589816 is about 1035.2712509893.

The spelling of 1109589816 in words is "one billion, one hundred nine million, five hundred eighty-nine thousand, eight hundred sixteen".