6509499089 has 2 divisors, whose sum is σ = 6509499090. Its totient is φ = 6509499088.

The previous prime is 6509499079. The next prime is 6509499097. The reversal of 6509499089 is 9809949056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5421818689 + 1087680400 = 73633^2 + 32980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6509499089 is a prime.

It is not a weakly prime, because it can be changed into another prime (6509499079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3254749544 + 3254749545.

It is an arithmetic number, because the mean of its divisors is an integer number (3254749545).

Almost surely, 2^6509499089 is an apocalyptic number.

It is an amenable number.

6509499089 is a deficient number, since it is larger than the sum of its proper divisors (1).

6509499089 is an equidigital number, since it uses as much as digits as its factorization.

6509499089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6298560, while the sum is 59.

The square root of 6509499089 is about 80681.4668247919. The cubic root of 6509499089 is about 1867.1642501565.

The spelling of 6509499089 in words is "six billion, five hundred nine million, four hundred ninety-nine thousand, eighty-nine".