Is 1638 a deficient number and what is its deficiency?

Is 1638 a deficient number?

Here we will explain and calculate if 1638 is a deficient number and its deficiency if applicable.

1638 is a deficient number if the sum of its proper divisors is less than 1638.

The sum of its proper divisors is calculated as follows: 1 + 2 + 3 + 6 + 7 + 9 + 13 + 14 + 18 + 21 + 26 + 39 + 42 + 63 + 78 + 91 + 117 + 126 + 182 + 234 + 273 + 546 + 819 = 2730.

2730 is not less than 1638. Therefore, 1638 is not a deficient number.

The deficiency of 1638 is 1638 minus the sum of its proper divisors. Thus, the deficiency of 1638 is 1638 - 2730 = No Deficiency

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