2205543973 has 2 divisors, whose sum is σ = 2205543974. Its totient is φ = 2205543972.

The previous prime is 2205543971. The next prime is 2205543979. The reversal of 2205543973 is 3793455022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1813226724 + 392317249 = 42582^2 + 19807^2 .

It is a cyclic number.

It is not a de Polignac number, because 2205543973 - 2¹ = 2205543971 is a prime.

Together with 2205543971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2205543971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102771986 + 1102771987.

It is an arithmetic number, because the mean of its divisors is an integer number (1102771987).

Almost surely, 2^2205543973 is an apocalyptic number.

It is an amenable number.

2205543973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2205543973 is an equidigital number, since it uses as much as digits as its factorization.

2205543973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 40.

The square root of 2205543973 is about 46963.2193636680. The cubic root of 2205543973 is about 1301.6830219404.

Adding to 2205543973 its reverse (3793455022), we get a palindrome (5998998995).

The spelling of 2205543973 in words is "two billion, two hundred five million, five hundred forty-three thousand, nine hundred seventy-three".