111168018 has 32 divisors (see below), whose sum is σ = 266044800. Its totient is φ = 34205328.

The previous prime is 111168011. The next prime is 111168023. The reversal of 111168018 is 810861111.

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 = 111167982 and 111168000.

It is not an unprimeable number, because it can be changed into a prime (111168011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78478 + ... + 79881.

It is an arithmetic number, because the mean of its divisors is an integer number (8313900).

Almost surely, 2^111168018 is an apocalyptic number.

111168018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

111168018 is an abundant number, since it is smaller than the sum of its proper divisors (154876782).

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

111168018 is a wasteful number, since it uses less digits than its factorization.

111168018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158383 (or 158377 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 27.

The square root of 111168018 is about 10543.6245191111. The cubic root of 111168018 is about 480.8319166975.

The spelling of 111168018 in words is "one hundred eleven million, one hundred sixty-eight thousand, eighteen".