3721082644 has 24 divisors (see below), whose sum is σ = 6762244608. Its totient is φ = 1789732320.

The previous prime is 3721082639. The next prime is 3721082663. The reversal of 3721082644 is 4462801273.

It is a congruent number.

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, 69139 + ... + 110554.

It is an arithmetic number, because the mean of its divisors is an integer number (281760192).

Almost surely, 2^3721082644 is an apocalyptic number.

It is an amenable number.

3721082644 is a deficient number, since it is larger than the sum of its proper divisors (3041161964).

3721082644 is a wasteful number, since it uses less digits than its factorization.

3721082644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179895 (or 179893 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 3721082644 is about 61000.6774060748. The cubic root of 3721082644 is about 1549.6124794669.

The spelling of 3721082644 in words is "three billion, seven hundred twenty-one million, eighty-two thousand, six hundred forty-four".