111838945 has 8 divisors (see below), whose sum is σ = 135510336. Its totient is φ = 88602096.

The previous prime is 111838943. The next prime is 111838967. The reversal of 111838945 is 549838111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 111838945 - 2¹ = 111838943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111838898 and 111838907.

It is not an unprimeable number, because it can be changed into a prime (111838943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108067 + ... + 109096.

It is an arithmetic number, because the mean of its divisors is an integer number (16938792).

Almost surely, 2^111838945 is an apocalyptic number.

It is an amenable number.

111838945 is a deficient number, since it is larger than the sum of its proper divisors (23671391).

111838945 is a wasteful number, since it uses less digits than its factorization.

111838945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217271.

The product of its digits is 34560, while the sum is 40.

The square root of 111838945 is about 10575.3933732982. The cubic root of 111838945 is about 481.7972911263.

It can be divided in two parts, 111 and 838945, that added together give a square (839056 = 916²).

The spelling of 111838945 in words is "one hundred eleven million, eight hundred thirty-eight thousand, nine hundred forty-five".