3921872052 has 48 divisors (see below), whose sum is σ = 11073525120. Its totient is φ = 1054620672.

The previous prime is 3921872051. The next prime is 3921872063. The reversal of 3921872052 is 2502781293.

It is a self number, because there is not a number n which added to its sum of digits gives 3921872052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921872051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1371777 + ... + 1374632.

It is an arithmetic number, because the mean of its divisors is an integer number (230698440).

Almost surely, 2^3921872052 is an apocalyptic number.

It is an amenable number.

3921872052 is an abundant number, since it is smaller than the sum of its proper divisors (7151653068).

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

3921872052 is a wasteful number, since it uses less digits than its factorization.

3921872052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746440 (or 2746438 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 3921872052 is about 62624.8517123993. The cubic root of 3921872052 is about 1576.9979920323.

The spelling of 3921872052 in words is "three billion, nine hundred twenty-one million, eight hundred seventy-two thousand, fifty-two".