Is 1781 a deficient number and what is its deficiency?

Is 1781 a deficient number?

Here we will explain and calculate if 1781 is a deficient number and its deficiency if applicable.

1781 is a deficient number if the sum of its proper divisors is less than 1781.

The sum of its proper divisors is calculated as follows: 1 + 13 + 137 = 151.

151 is less than 1781. Therefore, 1781 is a deficient number.

The deficiency of 1781 is 1781 minus the sum of its proper divisors. Thus, the deficiency of 1781 is 1781 - 151 = 1630

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