It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 427 163 016 is not a prime number.
For example, 427 163 016 can be divided by 2: 427 163 016 / 2 = 213 581 508.
For 427 163 016 to be a prime number, it would have been required that 427 163 016 has only two divisors, i.e., itself and 1.
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427 163 016 is an even number, because it is evenly divisible by 2: 427 163 016 / 2 = 213 581 508.
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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 427 163 016 is about 20 667.922.
Thus, the square root of 427 163 016 is not an integer, and therefore 427 163 016 is not a square number.
The square of a number (here 427 163 016) is the result of the product of this number (427 163 016) by itself (i.e., 427 163 016 × 427 163 016); the square of 427 163 016 is sometimes called "raising 427 163 016 to the power 2", or "427 163 016 squared".
The square of 427 163 016 is 182 468 242 238 216 256 because 427 163 016 × 427 163 016 = 427 163 0162 = 182 468 242 238 216 256.
As a consequence, 427 163 016 is the square root of 182 468 242 238 216 256.
427 163 016 is a number with 9 digits.
The multiples of 427 163 016 are all integers evenly divisible by 427 163 016, that is all numbers such that the remainder of the division by 427 163 016 is zero. There are infinitely many multiples of 427 163 016. The smallest multiples of 427 163 016 are: