918663909607 has 2 divisors, whose sum is σ = 918663909608. Its totient is φ = 918663909606.

The previous prime is 918663909547. The next prime is 918663909617. The reversal of 918663909607 is 706909366819.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-918663909607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918663909617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459331954803 + 459331954804.

It is an arithmetic number, because the mean of its divisors is an integer number (459331954804).

Almost surely, 2^918663909607 is an apocalyptic number.

918663909607 is a deficient number, since it is larger than the sum of its proper divisors (1).

918663909607 is an equidigital number, since it uses as much as digits as its factorization.

918663909607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26453952, while the sum is 64.

The spelling of 918663909607 in words is "nine hundred eighteen billion, six hundred sixty-three million, nine hundred nine thousand, six hundred seven".