3981938525 has 24 divisors (see below), whose sum is σ = 5119910400. Its totient is φ = 3068452800.

The previous prime is 3981938501. The next prime is 3981938531. The reversal of 3981938525 is 5258391893.

It is not a de Polignac number, because 3981938525 - 2⁶ = 3981938461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 312020 + ... + 324530.

It is an arithmetic number, because the mean of its divisors is an integer number (213329600).

Almost surely, 2^3981938525 is an apocalyptic number.

It is an amenable number.

3981938525 is a deficient number, since it is larger than the sum of its proper divisors (1137971875).

3981938525 is a wasteful number, since it uses less digits than its factorization.

3981938525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12989 (or 12984 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 53.

The square root of 3981938525 is about 63102.6031554959. The cubic root of 3981938525 is about 1585.0082131284.

The spelling of 3981938525 in words is "three billion, nine hundred eighty-one million, nine hundred thirty-eight thousand, five hundred twenty-five".