2243718691 has 2 divisors, whose sum is σ = 2243718692. Its totient is φ = 2243718690.

The previous prime is 2243718689. The next prime is 2243718761. The reversal of 2243718691 is 1968173422.

2243718691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2243718691 - 2¹ = 2243718689 is a prime.

Together with 2243718689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2243718671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121859345 + 1121859346.

It is an arithmetic number, because the mean of its divisors is an integer number (1121859346).

Almost surely, 2^2243718691 is an apocalyptic number.

2243718691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243718691 is an equidigital number, since it uses as much as digits as its factorization.

2243718691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 2243718691 is about 47367.9078174242. The cubic root of 2243718691 is about 1309.1501764403.

The spelling of 2243718691 in words is "two billion, two hundred forty-three million, seven hundred eighteen thousand, six hundred ninety-one".