1113186816 has 120 divisors (see below), whose sum is σ = 3671800704. Its totient is φ = 318044160.

The previous prime is 1113186797. The next prime is 1113186857. The reversal of 1113186816 is 6186813111.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15001 + ... + 49511.

Almost surely, 2^1113186816 is an apocalyptic number.

1113186816 is a gapful number since it is divisible by the number (16) 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 1113186816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1835900352).

1113186816 is an abundant number, since it is smaller than the sum of its proper divisors (2558613888).

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

1113186816 is an equidigital number, since it uses as much as digits as its factorization.

1113186816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34542 (or 34523 counting only the distinct ones).

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

The square root of 1113186816 is about 33364.4543788745. The cubic root of 1113186816 is about 1036.3887372079.

Adding to 1113186816 its reverse (6186813111), we get a palindrome (7299999927).

The spelling of 1113186816 in words is "one billion, one hundred thirteen million, one hundred eighty-six thousand, eight hundred sixteen".