109440018 has 32 divisors (see below), whose sum is σ = 247795200. Its totient is φ = 35790768.

The previous prime is 109439989. The next prime is 109440041. The reversal of 109440018 is 810044901.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 109439973 and 109440000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16258 + ... + 21981.

It is an arithmetic number, because the mean of its divisors is an integer number (7743600).

Almost surely, 2^109440018 is an apocalyptic number.

109440018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

109440018 is an abundant number, since it is smaller than the sum of its proper divisors (138355182).

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

109440018 is a wasteful number, since it uses less digits than its factorization.

109440018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38303 (or 38297 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 109440018 is about 10461.3583248066. The cubic root of 109440018 is about 478.3275387962.

Adding to 109440018 its reverse (810044901), we get a palindrome (919484919).

The spelling of 109440018 in words is "one hundred nine million, four hundred forty thousand, eighteen".