2718113681 has 2 divisors, whose sum is σ = 2718113682. Its totient is φ = 2718113680.

The previous prime is 2718113677. The next prime is 2718113689. The reversal of 2718113681 is 1863118172.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2714931025 + 3182656 = 52105^2 + 1784^2 .

It is a cyclic number.

It is not a de Polignac number, because 2718113681 - 2² = 2718113677 is a prime.

It is a super-2 number, since 2×2718113681² = 14776283965678739522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2718113689) 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, 1359056840 + 1359056841.

It is an arithmetic number, because the mean of its divisors is an integer number (1359056841).

Almost surely, 2^2718113681 is an apocalyptic number.

It is an amenable number.

2718113681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2718113681 is an equidigital number, since it uses as much as digits as its factorization.

2718113681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 38.

The square root of 2718113681 is about 52135.5318472920. The cubic root of 2718113681 is about 1395.5836478980.

The spelling of 2718113681 in words is "two billion, seven hundred eighteen million, one hundred thirteen thousand, six hundred eighty-one".