2011205473 has 2 divisors, whose sum is σ = 2011205474. Its totient is φ = 2011205472.

The previous prime is 2011205467. The next prime is 2011205509. The reversal of 2011205473 is 3745021102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1933976529 + 77228944 = 43977^2 + 8788^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011205473 - 2⁹ = 2011204961 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011205173) 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, 1005602736 + 1005602737.

It is an arithmetic number, because the mean of its divisors is an integer number (1005602737).

Almost surely, 2^2011205473 is an apocalyptic number.

It is an amenable number.

2011205473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011205473 is an equidigital number, since it uses as much as digits as its factorization.

2011205473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2011205473 is about 44846.4655574996. The cubic root of 2011205473 is about 1262.2696709901.

Adding to 2011205473 its reverse (3745021102), we get a palindrome (5756226575).

The spelling of 2011205473 in words is "two billion, eleven million, two hundred five thousand, four hundred seventy-three".