109918818 has 24 divisors (see below), whose sum is σ = 238430556. Its totient is φ = 36597600.

The previous prime is 109918813. The next prime is 109918847. The reversal of 109918818 is 818819901.

It can be written as a sum of positive squares in 2 ways, for example, as 102151449 + 7767369 = 10107^2 + 2787^2 .

It is not an unprimeable number, because it can be changed into a prime (109918813) 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 11 ways as a sum of consecutive naturals, for example, 15388 + ... + 21368.

Almost surely, 2^109918818 is an apocalyptic number.

109918818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

109918818 is an abundant number, since it is smaller than the sum of its proper divisors (128511738).

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

109918818 is a wasteful number, since it uses less digits than its factorization.

109918818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7010 (or 7007 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 45.

The square root of 109918818 is about 10484.2175673724. The cubic root of 109918818 is about 479.0240848648.

The spelling of 109918818 in words is "one hundred nine million, nine hundred eighteen thousand, eight hundred eighteen".