4518813217 has 2 divisors, whose sum is σ = 4518813218. Its totient is φ = 4518813216.

The previous prime is 4518813199. The next prime is 4518813227. The reversal of 4518813217 is 7123188154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3335178001 + 1183635216 = 57751^2 + 34404^2 .

It is a cyclic number.

It is not a de Polignac number, because 4518813217 - 2¹¹ = 4518811169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4518813217.

It is not a weakly prime, because it can be changed into another prime (4518813227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2259406608 + 2259406609.

It is an arithmetic number, because the mean of its divisors is an integer number (2259406609).

Almost surely, 2^4518813217 is an apocalyptic number.

It is an amenable number.

4518813217 is a deficient number, since it is larger than the sum of its proper divisors (1).

4518813217 is an equidigital number, since it uses as much as digits as its factorization.

4518813217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 40.

The square root of 4518813217 is about 67222.1185102047. The cubic root of 4518813217 is about 1653.2611617016.

The spelling of 4518813217 in words is "four billion, five hundred eighteen million, eight hundred thirteen thousand, two hundred seventeen".