3867521568 has 48 divisors (see below), whose sum is σ = 10210971456. Its totient is φ = 1281716480.

The previous prime is 3867521561. The next prime is 3867521569. The reversal of 3867521568 is 8651257683.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 3867521568.

It is not an unprimeable number, because it can be changed into a prime (3867521561) 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 7 ways as a sum of consecutive naturals, for example, 99828 + ... + 133043.

It is an arithmetic number, because the mean of its divisors is an integer number (212728572).

Almost surely, 2^3867521568 is an apocalyptic number.

It is an amenable number.

3867521568 is an abundant number, since it is smaller than the sum of its proper divisors (6343449888).

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

3867521568 is a wasteful number, since it uses less digits than its factorization.

3867521568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233057 (or 233049 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 51.

The square root of 3867521568 is about 62189.4007689413. The cubic root of 3867521568 is about 1569.6792410021.

The spelling of 3867521568 in words is "three billion, eight hundred sixty-seven million, five hundred twenty-one thousand, five hundred sixty-eight".