3868121188 has 6 divisors (see below), whose sum is σ = 6769212086. Its totient is φ = 1934060592.

The previous prime is 3868121171. The next prime is 3868121189. The reversal of 3868121188 is 8811218683.

3868121188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2936772864 + 931348324 = 54192^2 + 30518^2 .

It is not an unprimeable number, because it can be changed into a prime (3868121189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483515145 + ... + 483515152.

Almost surely, 2^3868121188 is an apocalyptic number.

It is an amenable number.

3868121188 is a deficient number, since it is larger than the sum of its proper divisors (2901090898).

3868121188 is a wasteful number, since it uses less digits than its factorization.

3868121188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967030301 (or 967030299 counting only the distinct ones).

The product of its digits is 147456, while the sum is 46.

The square root of 3868121188 is about 62194.2215000719. The cubic root of 3868121188 is about 1569.7603577597.

The spelling of 3868121188 in words is "three billion, eight hundred sixty-eight million, one hundred twenty-one thousand, one hundred eighty-eight".