919065018689 has 2 divisors, whose sum is σ = 919065018690. Its totient is φ = 919065018688.

The previous prime is 919065018667. The next prime is 919065018719. The reversal of 919065018689 is 986810560919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 834911650225 + 84153368464 = 913735^2 + 290092^2 .

It is a cyclic number.

It is not a de Polignac number, because 919065018689 - 2⁸ = 919065018433 is a prime.

It is not a weakly prime, because it can be changed into another prime (919065018659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459532509344 + 459532509345.

It is an arithmetic number, because the mean of its divisors is an integer number (459532509345).

Almost surely, 2^919065018689 is an apocalyptic number.

It is an amenable number.

919065018689 is a deficient number, since it is larger than the sum of its proper divisors (1).

919065018689 is an equidigital number, since it uses as much as digits as its factorization.

919065018689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 62.

The spelling of 919065018689 in words is "nine hundred nineteen billion, sixty-five million, eighteen thousand, six hundred eighty-nine".