2718109 has 2 divisors, whose sum is σ = 2718110. Its totient is φ = 2718108.

The previous prime is 2718103. The next prime is 2718127. The reversal of 2718109 is 9018172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2393209 + 324900 = 1547^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2718109 - 2³ = 2718101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2718101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1359054 + 1359055.

It is an arithmetic number, because the mean of its divisors is an integer number (1359055).

2^2718109 is an apocalyptic number.

It is an amenable number.

2718109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2718109 is an equidigital number, since it uses as much as digits as its factorization.

2718109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 2718109 is about 1648.6688569874. The cubic root of 2718109 is about 139.5582846763.

The spelling of 2718109 in words is "two million, seven hundred eighteen thousand, one hundred nine".