3634442321 has 4 divisors (see below), whose sum is σ = 3680448000. Its totient is φ = 3588436644.

The previous prime is 3634442309. The next prime is 3634442323. The reversal of 3634442321 is 1232444363.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1232444363 = 281 ⋅4385923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3634442321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3634442323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23002721 + ... + 23002878.

It is an arithmetic number, because the mean of its divisors is an integer number (920112000).

Almost surely, 2^3634442321 is an apocalyptic number.

It is an amenable number.

3634442321 is a deficient number, since it is larger than the sum of its proper divisors (46005679).

3634442321 is an equidigital number, since it uses as much as digits as its factorization.

3634442321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46005678.

The product of its digits is 41472, while the sum is 32.

The square root of 3634442321 is about 60286.3361052901. The cubic root of 3634442321 is about 1537.4910404307.

Adding to 3634442321 its reverse (1232444363), we get a palindrome (4866886684).

The spelling of 3634442321 in words is "three billion, six hundred thirty-four million, four hundred forty-two thousand, three hundred twenty-one".