3865816608 has 96 divisors (see below), whose sum is σ = 10883678400. Its totient is φ = 1197720576.

The previous prime is 3865816607. The next prime is 3865816621. The reversal of 3865816608 is 8066185683.

3865816608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (3865816607) 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, 76678 + ... + 116666.

It is an arithmetic number, because the mean of its divisors is an integer number (113371650).

Almost surely, 2^3865816608 is an apocalyptic number.

3865816608 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3865816608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5441839200).

3865816608 is an abundant number, since it is smaller than the sum of its proper divisors (7017861792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3865816608 is a wasteful number, since it uses less digits than its factorization.

3865816608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40074 (or 40066 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The square root of 3865816608 is about 62175.6914557450. The cubic root of 3865816608 is about 1569.4485477245.

The spelling of 3865816608 in words is "three billion, eight hundred sixty-five million, eight hundred sixteen thousand, six hundred eight".