1109811384 has 96 divisors (see below), whose sum is σ = 3286623600. Its totient is φ = 335523840.

The previous prime is 1109811379. The next prime is 1109811401. The reversal of 1109811384 is 4831189011.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 401752 + ... + 404504.

Almost surely, 2^1109811384 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 1109811384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1643311800).

1109811384 is an abundant number, since it is smaller than the sum of its proper divisors (2176812216).

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

1109811384 is a wasteful number, since it uses less digits than its factorization.

1109811384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285 (or 3278 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 1109811384 is about 33313.8317219740. The cubic root of 1109811384 is about 1035.3401556455.

The spelling of 1109811384 in words is "one billion, one hundred nine million, eight hundred eleven thousand, three hundred eighty-four".