2041002809 has 2 divisors, whose sum is σ = 2041002810. Its totient is φ = 2041002808.

The previous prime is 2041002791. The next prime is 2041002823. The reversal of 2041002809 is 9082001402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1062564409 + 978438400 = 32597^2 + 31280^2 .

It is a cyclic number.

It is not a de Polignac number, because 2041002809 - 2²⁰ = 2039954233 is a prime.

It is not a weakly prime, because it can be changed into another prime (2041002829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020501404 + 1020501405.

It is an arithmetic number, because the mean of its divisors is an integer number (1020501405).

Almost surely, 2^2041002809 is an apocalyptic number.

It is an amenable number.

2041002809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2041002809 is an equidigital number, since it uses as much as digits as its factorization.

2041002809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2041002809 is about 45177.4590808292. The cubic root of 2041002809 is about 1268.4729220175.

The spelling of 2041002809 in words is "two billion, forty-one million, two thousand, eight hundred nine".