3644406529 has 2 divisors, whose sum is σ = 3644406530. Its totient is φ = 3644406528.

The previous prime is 3644406487. The next prime is 3644406553. The reversal of 3644406529 is 9256044463.

It is a happy number.

3644406529 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3560866929 + 83539600 = 59673^2 + 9140^2 .

It is a cyclic number.

It is not a de Polignac number, because 3644406529 - 2¹¹ = 3644404481 is a prime.

It is not a weakly prime, because it can be changed into another prime (3644406589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822203264 + 1822203265.

It is an arithmetic number, because the mean of its divisors is an integer number (1822203265).

Almost surely, 2^3644406529 is an apocalyptic number.

It is an amenable number.

3644406529 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644406529 is an equidigital number, since it uses as much as digits as its factorization.

3644406529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 43.

The square root of 3644406529 is about 60368.9202239033. The cubic root of 3644406529 is about 1538.8948231023.

The spelling of 3644406529 in words is "three billion, six hundred forty-four million, four hundred six thousand, five hundred twenty-nine".