2718642257 has 2 divisors, whose sum is σ = 2718642258. Its totient is φ = 2718642256.

The previous prime is 2718642233. The next prime is 2718642259. The reversal of 2718642257 is 7522468172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2467704976 + 250937281 = 49676^2 + 15841^2 .

It is a cyclic number.

It is not a de Polignac number, because 2718642257 - 2⁸ = 2718642001 is a prime.

Together with 2718642259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2718642259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1359321128 + 1359321129.

It is an arithmetic number, because the mean of its divisors is an integer number (1359321129).

Almost surely, 2^2718642257 is an apocalyptic number.

It is an amenable number.

2718642257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2718642257 is an equidigital number, since it uses as much as digits as its factorization.

2718642257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 44.

The square root of 2718642257 is about 52140.6008500094. The cubic root of 2718642257 is about 1395.6741057544.

The spelling of 2718642257 in words is "two billion, seven hundred eighteen million, six hundred forty-two thousand, two hundred fifty-seven".