Is 1821 a prime number? What are the divisors of 1821?

## Parity of 1 821

1 821 is an odd number, because it is not evenly divisible by 2.

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## Is 1 821 a perfect square number?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 1 821 is about 42.673.

Thus, the square root of 1 821 is not an integer, and therefore 1 821 is not a square number.

## What is the square number of 1 821?

The square of a number (here 1 821) is the result of the product of this number (1 821) by itself (i.e., 1 821 × 1 821); the square of 1 821 is sometimes called "raising 1 821 to the power 2", or "1 821 squared".

The square of 1 821 is 3 316 041 because 1 821 × 1 821 = 1 8212 = 3 316 041.

As a consequence, 1 821 is the square root of 3 316 041.

## Number of digits of 1 821

1 821 is a number with 4 digits.

## What are the multiples of 1 821?

The multiples of 1 821 are all integers evenly divisible by 1 821, that is all numbers such that the remainder of the division by 1 821 is zero. There are infinitely many multiples of 1 821. The smallest multiples of 1 821 are:

## Numbers near 1 821

### Nearest numbers from 1 821

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