3643404073 has 2 divisors, whose sum is σ = 3643404074. Its totient is φ = 3643404072.

The previous prime is 3643404043. The next prime is 3643404077. The reversal of 3643404073 is 3704043463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3553590544 + 89813529 = 59612^2 + 9477^2 .

It is a cyclic number.

It is not a de Polignac number, because 3643404073 - 2⁵ = 3643404041 is a prime.

It is not a weakly prime, because it can be changed into another prime (3643404077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1821702036 + 1821702037.

It is an arithmetic number, because the mean of its divisors is an integer number (1821702037).

Almost surely, 2^3643404073 is an apocalyptic number.

It is an amenable number.

3643404073 is a deficient number, since it is larger than the sum of its proper divisors (1).

3643404073 is an equidigital number, since it uses as much as digits as its factorization.

3643404073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 34.

The square root of 3643404073 is about 60360.6169037395. The cubic root of 3643404073 is about 1538.7537104314.

The spelling of 3643404073 in words is "three billion, six hundred forty-three million, four hundred four thousand, seventy-three".