3886711865 has 4 divisors (see below), whose sum is σ = 4664054244. Its totient is φ = 3109369488.

The previous prime is 3886711849. The next prime is 3886711897. The reversal of 3886711865 is 5681176883.

3886711865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5681176883 = 30109 ⋅188687.

It can be written as a sum of positive squares in 2 ways, for example, as 3034247056 + 852464809 = 55084^2 + 29197^2 .

It is a cyclic number.

It is not a de Polignac number, because 3886711865 - 2⁴ = 3886711849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388671182 + ... + 388671191.

It is an arithmetic number, because the mean of its divisors is an integer number (1166013561).

Almost surely, 2^3886711865 is an apocalyptic number.

It is an amenable number.

3886711865 is a deficient number, since it is larger than the sum of its proper divisors (777342379).

3886711865 is an equidigital number, since it uses as much as digits as its factorization.

3886711865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777342378.

The product of its digits is 1935360, while the sum is 53.

The square root of 3886711865 is about 62343.4989794445. The cubic root of 3886711865 is about 1572.2711615457.

The spelling of 3886711865 in words is "three billion, eight hundred eighty-six million, seven hundred eleven thousand, eight hundred sixty-five".