3643630326 has 48 divisors (see below), whose sum is σ = 9192572064. Its totient is φ = 1021393152.

The previous prime is 3643630279. The next prime is 3643630339. The reversal of 3643630326 is 6230363463.

3643630326 is a `hidden beast` number, since 3 + 643 + 6 + 3 + 0 + 3 + 2 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266131 + ... + 279486.

It is an arithmetic number, because the mean of its divisors is an integer number (191511918).

Almost surely, 2^3643630326 is an apocalyptic number.

3643630326 is an abundant number, since it is smaller than the sum of its proper divisors (5548941738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3643630326 is a wasteful number, since it uses less digits than its factorization.

3643630326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545685 (or 545682 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 36.

The square root of 3643630326 is about 60362.4910519770. The cubic root of 3643630326 is about 1538.7855616371.

Adding to 3643630326 its reverse (6230363463), we get a palindrome (9873993789).

The spelling of 3643630326 in words is "three billion, six hundred forty-three million, six hundred thirty thousand, three hundred twenty-six".