3634221401 has 2 divisors, whose sum is σ = 3634221402. Its totient is φ = 3634221400.

The previous prime is 3634221377. The next prime is 3634221463. The reversal of 3634221401 is 1041224363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2573025625 + 1061195776 = 50725^2 + 32576^2 .

It is a cyclic number.

It is not a de Polignac number, because 3634221401 - 2⁶ = 3634221337 is a prime.

It is not a weakly prime, because it can be changed into another prime (3634221301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1817110700 + 1817110701.

It is an arithmetic number, because the mean of its divisors is an integer number (1817110701).

Almost surely, 2^3634221401 is an apocalyptic number.

It is an amenable number.

3634221401 is a deficient number, since it is larger than the sum of its proper divisors (1).

3634221401 is an equidigital number, since it uses as much as digits as its factorization.

3634221401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 3634221401 is about 60284.5038214631. The cubic root of 3634221401 is about 1537.4598876088.

Adding to 3634221401 its reverse (1041224363), we get a palindrome (4675445764).

The spelling of 3634221401 in words is "three billion, six hundred thirty-four million, two hundred twenty-one thousand, four hundred one".