1116818388 has 72 divisors (see below), whose sum is σ = 3368198400. Its totient is φ = 319089456.

The previous prime is 1116818357. The next prime is 1116818389. The reversal of 1116818388 is 8838186111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116818389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100228 + ... + 110811.

Almost surely, 2^1116818388 is an apocalyptic number.

1116818388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1116818388 is an abundant number, since it is smaller than the sum of its proper divisors (2251380012).

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

1116818388 is a wasteful number, since it uses less digits than its factorization.

1116818388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211066 (or 211051 counting only the distinct ones).

The product of its digits is 73728, while the sum is 45.

The square root of 1116818388 is about 33418.8328341969. The cubic root of 1116818388 is about 1037.5145245559.

The spelling of 1116818388 in words is "one billion, one hundred sixteen million, eight hundred eighteen thousand, three hundred eighty-eight".