3264643644 has 48 divisors (see below), whose sum is σ = 8163552768. Its totient is φ = 1012765248.

The previous prime is 3264643643. The next prime is 3264643649. The reversal of 3264643644 is 4463464623.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 3264643596 and 3264643605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3264643643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149632 + ... + 170055.

It is an arithmetic number, because the mean of its divisors is an integer number (170074016).

Almost surely, 2^3264643644 is an apocalyptic number.

It is an amenable number.

3264643644 is an abundant number, since it is smaller than the sum of its proper divisors (4898909124).

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

3264643644 is a wasteful number, since it uses less digits than its factorization.

3264643644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319754 (or 319752 counting only the distinct ones).

The product of its digits is 995328, while the sum is 42.

The square root of 3264643644 is about 57137.0601623850. The cubic root of 3264643644 is about 1483.4694057331.

The spelling of 3264643644 in words is "three billion, two hundred sixty-four million, six hundred forty-three thousand, six hundred forty-four".