2718345217 has 18 divisors (see below), whose sum is σ = 3179812374. Its totient is φ = 2317049280.

The previous prime is 2718345199. The next prime is 2718345221. The reversal of 2718345217 is 7125438172.

It can be written as a sum of positive squares in 3 ways, for example, as 1065434881 + 1652910336 = 32641^2 + 40656^2 .

It is not a de Polignac number, because 2718345217 - 2⁷ = 2718345089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2718345217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2718345517) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6456667 + ... + 6457087.

It is an arithmetic number, because the mean of its divisors is an integer number (176656243).

Almost surely, 2^2718345217 is an apocalyptic number.

It is an amenable number.

2718345217 is a deficient number, since it is larger than the sum of its proper divisors (461467157).

2718345217 is an frugal number, since it uses more digits than its factorization.

2718345217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169 (or 741 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 2718345217 is about 52137.7523201758. The cubic root of 2718345217 is about 1395.6232732558.

The spelling of 2718345217 in words is "two billion, seven hundred eighteen million, three hundred forty-five thousand, two hundred seventeen".