3868263721 has 16 divisors (see below), whose sum is σ = 4479205248. Its totient is φ = 3271996800.

The previous prime is 3868263719. The next prime is 3868263739. The reversal of 3868263721 is 1273628683.

3868263721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3868263721 - 2¹ = 3868263719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3868263781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589941 + ... + 596461.

It is an arithmetic number, because the mean of its divisors is an integer number (279950328).

Almost surely, 2^3868263721 is an apocalyptic number.

It is an amenable number.

3868263721 is a deficient number, since it is larger than the sum of its proper divisors (610941527).

3868263721 is a wasteful number, since it uses less digits than its factorization.

3868263721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7632.

The product of its digits is 580608, while the sum is 46.

The square root of 3868263721 is about 62195.3673596354. The cubic root of 3868263721 is about 1569.7796384298.

The spelling of 3868263721 in words is "three billion, eight hundred sixty-eight million, two hundred sixty-three thousand, seven hundred twenty-one".