2205444641 has 2 divisors, whose sum is σ = 2205444642. Its totient is φ = 2205444640.

The previous prime is 2205444611. The next prime is 2205444643. The reversal of 2205444641 is 1464445022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1374852241 + 830592400 = 37079^2 + 28820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2205444641 is a prime.

Together with 2205444643, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2205444598 and 2205444607.

It is not a weakly prime, because it can be changed into another prime (2205444643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102722320 + 1102722321.

It is an arithmetic number, because the mean of its divisors is an integer number (1102722321).

Almost surely, 2^2205444641 is an apocalyptic number.

It is an amenable number.

2205444641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2205444641 is an equidigital number, since it uses as much as digits as its factorization.

2205444641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 2205444641 is about 46962.1618007519. The cubic root of 2205444641 is about 1301.6634801673.

Adding to 2205444641 its reverse (1464445022), we get a palindrome (3669889663).

The spelling of 2205444641 in words is "two billion, two hundred five million, four hundred forty-four thousand, six hundred forty-one".