4391643264 has 64 divisors (see below), whose sum is σ = 11672300640. Its totient is φ = 1463003136.

The previous prime is 4391643181. The next prime is 4391643271. The reversal of 4391643264 is 4623461934.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095087 + ... + 1099089.

Almost surely, 2^4391643264 is an apocalyptic number.

It is an amenable number.

4391643264 is an abundant number, since it is smaller than the sum of its proper divisors (7280657376).

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

4391643264 is a wasteful number, since it uses less digits than its factorization.

4391643264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6877 (or 6865 counting only the distinct ones).

The product of its digits is 373248, while the sum is 42.

The square root of 4391643264 is about 66269.4746018104. The cubic root of 4391643264 is about 1637.6044819917.

The spelling of 4391643264 in words is "four billion, three hundred ninety-one million, six hundred forty-three thousand, two hundred sixty-four".