111918372 has 12 divisors (see below), whose sum is σ = 261142896. Its totient is φ = 37306120.

The previous prime is 111918349. The next prime is 111918407. The reversal of 111918372 is 273819111.

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

It is a super-2 number, since 2×111918372² = 25051443982260768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4663254 + ... + 4663277.

It is an arithmetic number, because the mean of its divisors is an integer number (21761908).

Almost surely, 2^111918372 is an apocalyptic number.

111918372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111918372 is an abundant number, since it is smaller than the sum of its proper divisors (149224524).

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

111918372 is a wasteful number, since it uses less digits than its factorization.

111918372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9326538 (or 9326536 counting only the distinct ones).

The product of its digits is 3024, while the sum is 33.

The square root of 111918372 is about 10579.1479808158. The cubic root of 111918372 is about 481.9113201523.

It can be divided in two parts, 1119 and 18372, that added together give a palindrome (19491).

The spelling of 111918372 in words is "one hundred eleven million, nine hundred eighteen thousand, three hundred seventy-two".