111641168 has 40 divisors (see below), whose sum is σ = 228080640. Its totient is φ = 52859520.

The previous prime is 111641147. The next prime is 111641183. The reversal of 111641168 is 861146111.

It is a self number, because there is not a number n which added to its sum of digits gives 111641168.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20918 + ... + 25706.

It is an arithmetic number, because the mean of its divisors is an integer number (5702016).

Almost surely, 2^111641168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111641168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114040320).

111641168 is an abundant number, since it is smaller than the sum of its proper divisors (116439472).

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

111641168 is a wasteful number, since it uses less digits than its factorization.

111641168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875 (or 4869 counting only the distinct ones).

The product of its digits is 1152, while the sum is 29.

The square root of 111641168 is about 10566.0384250674. The cubic root of 111641168 is about 481.5131186563.

Adding to 111641168 its reverse (861146111), we get a palindrome (972787279).

The spelling of 111641168 in words is "one hundred eleven million, six hundred forty-one thousand, one hundred sixty-eight".