3938956911 has 16 divisors (see below), whose sum is σ = 5838618720. Its totient is φ = 2624564160.

The previous prime is 3938956909. The next prime is 3938956919. The reversal of 3938956911 is 1196598393.

3938956911 is a `hidden beast` number, since 39 + 38 + 9 + 569 + 11 = 666.

It is not a de Polignac number, because 3938956911 - 2¹ = 3938956909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938956919) 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, 13521 + ... + 89781.

It is an arithmetic number, because the mean of its divisors is an integer number (364913670).

Almost surely, 2^3938956911 is an apocalyptic number.

3938956911 is a deficient number, since it is larger than the sum of its proper divisors (1899661809).

3938956911 is a wasteful number, since it uses less digits than its factorization.

3938956911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78183 (or 78177 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The square root of 3938956911 is about 62761.1098611234. The cubic root of 3938956911 is about 1579.2846346315.

The spelling of 3938956911 in words is "three billion, nine hundred thirty-eight million, nine hundred fifty-six thousand, nine hundred eleven".