2291773663 has 2 divisors, whose sum is σ = 2291773664. Its totient is φ = 2291773662.

The previous prime is 2291773637. The next prime is 2291773667. The reversal of 2291773663 is 3663771922.

2291773663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2291773663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2291773667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145886831 + 1145886832.

It is an arithmetic number, because the mean of its divisors is an integer number (1145886832).

Almost surely, 2^2291773663 is an apocalyptic number.

2291773663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291773663 is an equidigital number, since it uses as much as digits as its factorization.

2291773663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 46.

The square root of 2291773663 is about 47872.4729150271. The cubic root of 2291773663 is about 1318.4305004753.

It can be divided in two parts, 22917 and 73663, that added together give a triangular number (96580 = T₄₃₉).

The spelling of 2291773663 in words is "two billion, two hundred ninety-one million, seven hundred seventy-three thousand, six hundred sixty-three".