2718081749 has 2 divisors, whose sum is σ = 2718081750. Its totient is φ = 2718081748.

The previous prime is 2718081713. The next prime is 2718081799. The reversal of 2718081749 is 9471808172.

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., 2077080625 + 641001124 = 45575^2 + 25318^2 .

It is a cyclic number.

It is not a de Polignac number, because 2718081749 - 2¹² = 2718077653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2718081799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1359040874 + 1359040875.

It is an arithmetic number, because the mean of its divisors is an integer number (1359040875).

Almost surely, 2^2718081749 is an apocalyptic number.

It is an amenable number.

2718081749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2718081749 is an equidigital number, since it uses as much as digits as its factorization.

2718081749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 47.

The square root of 2718081749 is about 52135.2256061101. The cubic root of 2718081749 is about 1395.5781828395.

The spelling of 2718081749 in words is "two billion, seven hundred eighteen million, eighty-one thousand, seven hundred forty-nine".