Is 1980 a prime number?

1 980 is an even number, because it is evenly divisible by 2: 1 980 / 2 = 990.

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• What is an even 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 1 980 is about 44.497.

Thus, the square root of 1 980 is not an integer, and therefore 1 980 is not a square number.

The square of a number (here 1 980) is the result of the product of this number (1 980) by itself (i.e., 1 980 × 1 980); the square of 1 980 is sometimes called "raising 1 980 to the power 2", or "1 980 squared".

The square of 1 980 is 3 920 400 because 1 980 × 1 980 = 1 980² = 3 920 400.

As a consequence, 1 980 is the square root of 3 920 400.

1 980 is a number with 4 digits.

The multiples of 1 980 are all integers evenly divisible by 1 980, that is all numbers such that the remainder of the division by 1 980 is zero. There are infinitely many multiples of 1 980. The smallest multiples of 1 980 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 1 980 too, since 0 × 1 980 = 0
• 1 980: indeed, 1 980 is a multiple of itself, since 1 980 is evenly divisible by 1 980 (we have 1 980 / 1 980 = 1, so the remainder of this division is indeed zero)
• 3 960: indeed, 3 960 = 1 980 × 2
• 5 940: indeed, 5 940 = 1 980 × 3
• 7 920: indeed, 7 920 = 1 980 × 4
• 9 900: indeed, 9 900 = 1 980 × 5
• etc.

• Preceding numbers: …1 978, 1 979
• Following numbers: 1 981, 1 982…

Nearest numbers from 1 980

• Preceding prime number: 1 979
• Following prime number: 1 987

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• 1 980 est-il un nombre premier ?