It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 638 373 002 is not a prime number.
For example, 638 373 002 can be divided by 2: 638 373 002 / 2 = 319 186 501.
For 638 373 002 to be a prime number, it would have been required that 638 373 002 has only two divisors, i.e., itself and 1.
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638 373 002 is an even number, because it is evenly divisible by 2: 638 373 002 / 2 = 319 186 501.
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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 638 373 002 is about 25 266.044.
Thus, the square root of 638 373 002 is not an integer, and therefore 638 373 002 is not a square number.
The square of a number (here 638 373 002) is the result of the product of this number (638 373 002) by itself (i.e., 638 373 002 × 638 373 002); the square of 638 373 002 is sometimes called "raising 638 373 002 to the power 2", or "638 373 002 squared".
The square of 638 373 002 is 407 520 089 682 492 032 because 638 373 002 × 638 373 002 = 638 373 0022 = 407 520 089 682 492 032.
As a consequence, 638 373 002 is the square root of 407 520 089 682 492 032.
638 373 002 is a number with 9 digits.
The multiples of 638 373 002 are all integers evenly divisible by 638 373 002, that is all numbers such that the remainder of the division by 638 373 002 is zero. There are infinitely many multiples of 638 373 002. The smallest multiples of 638 373 002 are: