It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 27 018 009 is not a prime number.
For example, 27 018 009 can be divided by 3: 27 018 009 / 3 = 9 006 003.
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For 27 018 009 to be a prime number, it would have been required that 27 018 009 has only two divisors, i.e., itself and 1.
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27 018 009 is an odd number, because it is not evenly divisible by 2.
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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 27 018 009 is about 5 197.885.
Thus, the square root of 27 018 009 is not an integer, and therefore 27 018 009 is not a square number.
The square of a number (here 27 018 009) is the result of the product of this number (27 018 009) by itself (i.e., 27 018 009 × 27 018 009); the square of 27 018 009 is sometimes called "raising 27 018 009 to the power 2", or "27 018 009 squared".
The square of 27 018 009 is 729 972 810 324 081 because 27 018 009 × 27 018 009 = 27 018 0092 = 729 972 810 324 081.
As a consequence, 27 018 009 is the square root of 729 972 810 324 081.
27 018 009 is a number with 8 digits.
The multiples of 27 018 009 are all integers evenly divisible by 27 018 009, that is all numbers such that the remainder of the division by 27 018 009 is zero. There are infinitely many multiples of 27 018 009. The smallest multiples of 27 018 009 are: