3938922680 has 384 divisors, whose sum is σ = 12180672000. Its totient is φ = 1117670400.

The previous prime is 3938922677. The next prime is 3938922703. The reversal of 3938922680 is 862298393.

3938922680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×3938922680³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18667775 + ... + 18667985.

It is an arithmetic number, because the mean of its divisors is an integer number (31720500).

Almost surely, 2^3938922680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3938922680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6090336000).

3938922680 is an abundant number, since it is smaller than the sum of its proper divisors (8241749320).

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

3938922680 is a wasteful number, since it uses less digits than its factorization.

3938922680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 3938922680 is about 62760.8371518418. The cubic root of 3938922680 is about 1579.2800597614.

The spelling of 3938922680 in words is "three billion, nine hundred thirty-eight million, nine hundred twenty-two thousand, six hundred eighty".