Is 2018 a deficient number and what is its deficiency?

Is 2018 a deficient number?

Here we will explain and calculate if 2018 is a deficient number and its deficiency if applicable.

2018 is a deficient number if the sum of its proper divisors is less than 2018.

The sum of its proper divisors is calculated as follows: 1 + 2 + 1009 = 1012.

1012 is less than 2018. Therefore, 2018 is a deficient number.

The deficiency of 2018 is 2018 minus the sum of its proper divisors. Thus, the deficiency of 2018 is 2018 - 1012 = 1006

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