4493903819917 has 2 divisors, whose sum is σ = 4493903819918. Its totient is φ = 4493903819916.

The previous prime is 4493903819903. The next prime is 4493903819953. The reversal of 4493903819917 is 7199183093944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4206687142441 + 287216677476 = 2051021^2 + 535926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4493903819917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4493903819617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2246951909958 + 2246951909959.

It is an arithmetic number, because the mean of its divisors is an integer number (2246951909959).

Almost surely, 2^{4493903819917} is an apocalyptic number.

It is an amenable number.

4493903819917 is a deficient number, since it is larger than the sum of its proper divisors (1).

4493903819917 is an equidigital number, since it uses as much as digits as its factorization.

4493903819917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52907904, while the sum is 67.

The spelling of 4493903819917 in words is "four trillion, four hundred ninety-three billion, nine hundred three million, eight hundred nineteen thousand, nine hundred seventeen".