2237666243 has 2 divisors, whose sum is σ = 2237666244. Its totient is φ = 2237666242.

The previous prime is 2237666209. The next prime is 2237666261. The reversal of 2237666243 is 3426667322.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2237666243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2237666243.

It is not a weakly prime, because it can be changed into another prime (2239666243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1118833121 + 1118833122.

It is an arithmetic number, because the mean of its divisors is an integer number (1118833122).

Almost surely, 2^2237666243 is an apocalyptic number.

2237666243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2237666243 is an equidigital number, since it uses as much as digits as its factorization.

2237666243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 41.

The square root of 2237666243 is about 47303.9770315351. The cubic root of 2237666243 is about 1307.9719689227.

The spelling of 2237666243 in words is "two billion, two hundred thirty-seven million, six hundred sixty-six thousand, two hundred forty-three".