3865559380 has 24 divisors (see below), whose sum is σ = 8118942048. Its totient is φ = 1545982368.

The previous prime is 3865559371. The next prime is 3865559387. The reversal of 3865559380 is 839555683.

It is a happy number.

3865559380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865559387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174067 + ... + 195013.

It is an arithmetic number, because the mean of its divisors is an integer number (338289252).

Almost surely, 2^3865559380 is an apocalyptic number.

It is an amenable number.

3865559380 is an abundant number, since it is smaller than the sum of its proper divisors (4253382668).

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

3865559380 is a wasteful number, since it uses less digits than its factorization.

3865559380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30183 (or 30181 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 52.

The square root of 3865559380 is about 62173.6228637193. The cubic root of 3865559380 is about 1569.4137370488.

The spelling of 3865559380 in words is "three billion, eight hundred sixty-five million, five hundred fifty-nine thousand, three hundred eighty".