111851868 has 12 divisors (see below), whose sum is σ = 260987720. Its totient is φ = 37283952.

The previous prime is 111851867. The next prime is 111851881. The reversal of 111851868 is 868158111.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111851863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4660483 + ... + 4660506.

Almost surely, 2^111851868 is an apocalyptic number.

It is an amenable number.

111851868 is an abundant number, since it is smaller than the sum of its proper divisors (149135852).

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

111851868 is a wasteful number, since it uses less digits than its factorization.

111851868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9320996 (or 9320994 counting only the distinct ones).

The product of its digits is 15360, while the sum is 39.

The square root of 111851868 is about 10576.0043494696. The cubic root of 111851868 is about 481.8158476515.

The spelling of 111851868 in words is "one hundred eleven million, eight hundred fifty-one thousand, eight hundred sixty-eight".