1113805836 has 192 divisors, whose sum is σ = 3477196800. Its totient is φ = 303782400.

The previous prime is 1113805829. The next prime is 1113805853. The reversal of 1113805836 is 6385083111.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1113805836.

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 63 ways as a sum of consecutive naturals, for example, 632325 + ... + 634083.

It is an arithmetic number, because the mean of its divisors is an integer number (18110400).

Almost surely, 2^1113805836 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 1113805836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1738598400).

1113805836 is an abundant number, since it is smaller than the sum of its proper divisors (2363390964).

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

1113805836 is a wasteful number, since it uses less digits than its factorization.

1113805836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837 (or 1829 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1113805836 is about 33373.7297286354. The cubic root of 1113805836 is about 1036.5808063398.

Adding to 1113805836 its reverse (6385083111), we get a palindrome (7498888947).

The spelling of 1113805836 in words is "one billion, one hundred thirteen million, eight hundred five thousand, eight hundred thirty-six".