111938865 has 8 divisors (see below), whose sum is σ = 179102208. Its totient is φ = 59700720.

The previous prime is 111938839. The next prime is 111938887. The reversal of 111938865 is 568839111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111938865 - 2⁵ = 111938833 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3731281 + ... + 3731310.

It is an arithmetic number, because the mean of its divisors is an integer number (22387776).

Almost surely, 2^111938865 is an apocalyptic number.

111938865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111938865 is a deficient number, since it is larger than the sum of its proper divisors (67163343).

111938865 is an equidigital number, since it uses as much as digits as its factorization.

111938865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7462599.

The product of its digits is 51840, while the sum is 42.

The square root of 111938865 is about 10580.1164927424. The cubic root of 111938865 is about 481.9407320823.

The spelling of 111938865 in words is "one hundred eleven million, nine hundred thirty-eight thousand, eight hundred sixty-five".