4021313644 has 12 divisors (see below), whose sum is σ = 7059500784. Its totient is φ = 2004313424.

The previous prime is 4021313617. The next prime is 4021313677. The reversal of 4021313644 is 4463131204.

4021313644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1584424 + ... + 1586959.

It is an arithmetic number, because the mean of its divisors is an integer number (588291732).

Almost surely, 2^4021313644 is an apocalyptic number.

It is an amenable number.

4021313644 is a deficient number, since it is larger than the sum of its proper divisors (3038187140).

4021313644 is a wasteful number, since it uses less digits than its factorization.

4021313644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171704 (or 3171702 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 4021313644 is about 63413.8284918991. The cubic root of 4021313644 is about 1590.2155007672.

Adding to 4021313644 its reverse (4463131204), we get a palindrome (8484444848).

The spelling of 4021313644 in words is "four billion, twenty-one million, three hundred thirteen thousand, six hundred forty-four".