3644425129 has 2 divisors, whose sum is σ = 3644425130. Its totient is φ = 3644425128.

The previous prime is 3644425079. The next prime is 3644425159. The reversal of 3644425129 is 9215244463.

It is a happy number.

3644425129 is digitally balanced in base 2, 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., 3641881104 + 2544025 = 60348^2 + 1595^2 .

It is an emirp because it is prime and its reverse (9215244463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3644425129 - 2⁹ = 3644424617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3644425091 and 3644425100.

It is not a weakly prime, because it can be changed into another prime (3644425159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822212564 + 1822212565.

It is an arithmetic number, because the mean of its divisors is an integer number (1822212565).

Almost surely, 2^3644425129 is an apocalyptic number.

It is an amenable number.

3644425129 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644425129 is an equidigital number, since it uses as much as digits as its factorization.

3644425129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The square root of 3644425129 is about 60369.0742764870. The cubic root of 3644425129 is about 1538.8974411230.

The spelling of 3644425129 in words is "three billion, six hundred forty-four million, four hundred twenty-five thousand, one hundred twenty-nine".