8205747619 has 2 divisors, whose sum is σ = 8205747620. Its totient is φ = 8205747618.

The previous prime is 8205747601. The next prime is 8205747623. The reversal of 8205747619 is 9167475028.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8205747619 - 2¹³ = 8205739427 is a prime.

It is a super-2 number, since 2×8205747619² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8205747019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4102873809 + 4102873810.

It is an arithmetic number, because the mean of its divisors is an integer number (4102873810).

Almost surely, 2^8205747619 is an apocalyptic number.

8205747619 is a deficient number, since it is larger than the sum of its proper divisors (1).

8205747619 is an equidigital number, since it uses as much as digits as its factorization.

8205747619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 49.

The square root of 8205747619 is about 90585.5817390384. The cubic root of 8205747619 is about 2017.0007133217. Note that the first 3 decimals are identical.

The spelling of 8205747619 in words is "eight billion, two hundred five million, seven hundred forty-seven thousand, six hundred nineteen".