1109907918 has 72 divisors (see below), whose sum is σ = 2919101328. Its totient is φ = 303323328.

The previous prime is 1109907881. The next prime is 1109907919. The reversal of 1109907918 is 8197099011.

1109907918 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109907919) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7071 + ... + 47642.

It is an arithmetic number, because the mean of its divisors is an integer number (40543074).

Almost surely, 2^1109907918 is an apocalyptic number.

1109907918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1109907918 is an abundant number, since it is smaller than the sum of its proper divisors (1809193410).

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

1109907918 is a wasteful number, since it uses less digits than its factorization.

1109907918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54758 (or 54748 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 45.

The square root of 1109907918 is about 33315.2805481209. The cubic root of 1109907918 is about 1035.3701735477.

The spelling of 1109907918 in words is "one billion, one hundred nine million, nine hundred seven thousand, nine hundred eighteen".