111819934 has 16 divisors (see below), whose sum is σ = 169428672. Its totient is φ = 55346848.

The previous prime is 111819919. The next prime is 111819937. The reversal of 111819934 is 439918111.

It is a junction number, because it is equal to n+sod(n) for n = 111819893 and 111819902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111819937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100827 + ... + 101929.

It is an arithmetic number, because the mean of its divisors is an integer number (10589292).

Almost surely, 2^111819934 is an apocalyptic number.

111819934 is a deficient number, since it is larger than the sum of its proper divisors (57608738).

111819934 is a wasteful number, since it uses less digits than its factorization.

111819934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571.

The product of its digits is 7776, while the sum is 37.

The square root of 111819934 is about 10574.4945032848. The cubic root of 111819934 is about 481.7699900601.

It can be divided in two parts, 11181 and 9934, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 111819934 in words is "one hundred eleven million, eight hundred nineteen thousand, nine hundred thirty-four".