3272640809 has 2 divisors, whose sum is σ = 3272640810. Its totient is φ = 3272640808.

The previous prime is 3272640797. The next prime is 3272640817. The reversal of 3272640809 is 9080462723.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3116765584 + 155875225 = 55828^2 + 12485^2 .

It is a cyclic number.

It is not a de Polignac number, because 3272640809 - 2¹² = 3272636713 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3272640109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1636320404 + 1636320405.

It is an arithmetic number, because the mean of its divisors is an integer number (1636320405).

Almost surely, 2^3272640809 is an apocalyptic number.

It is an amenable number.

3272640809 is a deficient number, since it is larger than the sum of its proper divisors (1).

3272640809 is an equidigital number, since it uses as much as digits as its factorization.

3272640809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 3272640809 is about 57206.9996503924. Note that the first 3 decimals coincide. The cubic root of 3272640809 is about 1484.6797344312.

The spelling of 3272640809 in words is "three billion, two hundred seventy-two million, six hundred forty thousand, eight hundred nine".