3644634373 has 2 divisors, whose sum is σ = 3644634374. Its totient is φ = 3644634372.

The previous prime is 3644634353. The next prime is 3644634407. The reversal of 3644634373 is 3734364463.

3644634373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3644174689 + 459684 = 60367^2 + 678^2 .

It is an emirp because it is prime and its reverse (3734364463) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3644634373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3644634353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822317186 + 1822317187.

It is an arithmetic number, because the mean of its divisors is an integer number (1822317187).

Almost surely, 2^3644634373 is an apocalyptic number.

It is an amenable number.

3644634373 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644634373 is an equidigital number, since it uses as much as digits as its factorization.

3644634373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 43.

The square root of 3644634373 is about 60370.8072912728. The cubic root of 3644634373 is about 1538.9268923974.

The spelling of 3644634373 in words is "three billion, six hundred forty-four million, six hundred thirty-four thousand, three hundred seventy-three".