111813379 has 4 divisors (see below), whose sum is σ = 112036176. Its totient is φ = 111590584.

The previous prime is 111813353. The next prime is 111813389. The reversal of 111813379 is 973318111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111813379 - 2¹¹ = 111811331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111813349) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 110644 + ... + 111649.

It is an arithmetic number, because the mean of its divisors is an integer number (28009044).

Almost surely, 2^111813379 is an apocalyptic number.

111813379 is a deficient number, since it is larger than the sum of its proper divisors (222797).

111813379 is an equidigital number, since it uses as much as digits as its factorization.

111813379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222796.

The product of its digits is 4536, while the sum is 34.

The square root of 111813379 is about 10574.1845548487. The cubic root of 111813379 is about 481.7605759247.

The spelling of 111813379 in words is "one hundred eleven million, eight hundred thirteen thousand, three hundred seventy-nine".