It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 645 002 is not a prime number.
For example, 165 645 002 can be divided by 2: 165 645 002 / 2 = 82 822 501.
For 165 645 002 to be a prime number, it would have been required that 165 645 002 has only two divisors, i.e., itself and 1.
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165 645 002 is an even number, because it is evenly divisible by 2: 165 645 002 / 2 = 82 822 501.
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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 165 645 002 is about 12 870.315.
Thus, the square root of 165 645 002 is not an integer, and therefore 165 645 002 is not a square number.
The square of a number (here 165 645 002) is the result of the product of this number (165 645 002) by itself (i.e., 165 645 002 × 165 645 002); the square of 165 645 002 is sometimes called "raising 165 645 002 to the power 2", or "165 645 002 squared".
The square of 165 645 002 is 27 438 266 687 580 004 because 165 645 002 × 165 645 002 = 165 645 0022 = 27 438 266 687 580 004.
As a consequence, 165 645 002 is the square root of 27 438 266 687 580 004.
165 645 002 is a number with 9 digits.
The multiples of 165 645 002 are all integers evenly divisible by 165 645 002, that is all numbers such that the remainder of the division by 165 645 002 is zero. There are infinitely many multiples of 165 645 002. The smallest multiples of 165 645 002 are: