1109218684 has 18 divisors (see below), whose sum is σ = 2258052720. Its totient is φ = 475379352.

The previous prime is 1109218661. The next prime is 1109218699. The reversal of 1109218684 is 4868129011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2829444 + ... + 2829835.

Almost surely, 2^1109218684 is an apocalyptic number.

1109218684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1109218684 is an abundant number, since it is smaller than the sum of its proper divisors (1148834036).

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

1109218684 is a wasteful number, since it uses less digits than its factorization.

1109218684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5659297 (or 5659288 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 1109218684 is about 33304.9348295414. The cubic root of 1109218684 is about 1035.1558133954.

The spelling of 1109218684 in words is "one billion, one hundred nine million, two hundred eighteen thousand, six hundred eighty-four".