111843641 has 16 divisors (see below), whose sum is σ = 143641344. Its totient is φ = 84642624.

The previous prime is 111843631. The next prime is 111843647. The reversal of 111843641 is 146348111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111843641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111843647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24626 + ... + 28811.

It is an arithmetic number, because the mean of its divisors is an integer number (8977584).

Almost surely, 2^111843641 is an apocalyptic number.

It is an amenable number.

111843641 is a deficient number, since it is larger than the sum of its proper divisors (31797703).

111843641 is a wasteful number, since it uses less digits than its factorization.

111843641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53480.

The product of its digits is 2304, while the sum is 29.

The square root of 111843641 is about 10575.6153958056. The cubic root of 111843641 is about 481.8040344196.

The spelling of 111843641 in words is "one hundred eleven million, eight hundred forty-three thousand, six hundred forty-one".