It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 385 118 013 is not a prime number.
For example, 385 118 013 can be divided by 3: 385 118 013 / 3 = 128 372 671.
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For 385 118 013 to be a prime number, it would have been required that 385 118 013 has only two divisors, i.e., itself and 1.
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385 118 013 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 385 118 013 is about 19 624.424.
Thus, the square root of 385 118 013 is not an integer, and therefore 385 118 013 is not a square number.
The square of a number (here 385 118 013) is the result of the product of this number (385 118 013) by itself (i.e., 385 118 013 × 385 118 013); the square of 385 118 013 is sometimes called "raising 385 118 013 to the power 2", or "385 118 013 squared".
The square of 385 118 013 is 148 315 883 937 068 160 because 385 118 013 × 385 118 013 = 385 118 0132 = 148 315 883 937 068 160.
As a consequence, 385 118 013 is the square root of 148 315 883 937 068 160.
385 118 013 is a number with 9 digits.
The multiples of 385 118 013 are all integers evenly divisible by 385 118 013, that is all numbers such that the remainder of the division by 385 118 013 is zero. There are infinitely many multiples of 385 118 013. The smallest multiples of 385 118 013 are: