3881897568 has 96 divisors (see below), whose sum is σ = 11350281600. Its totient is φ = 1290757248.

The previous prime is 3881897533. The next prime is 3881897597. The reversal of 3881897568 is 8657981883.

3881897568 is a `hidden beast` number, since 388 + 189 + 75 + 6 + 8 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356655 + ... + 367377.

It is an arithmetic number, because the mean of its divisors is an integer number (118232100).

Almost surely, 2^3881897568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3881897568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5675140800).

3881897568 is an abundant number, since it is smaller than the sum of its proper divisors (7468384032).

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

3881897568 is a wasteful number, since it uses less digits than its factorization.

3881897568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11161 (or 11147 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 63.

The square root of 3881897568 is about 62304.8759568623. The cubic root of 3881897568 is about 1571.6217258927.

The spelling of 3881897568 in words is "three billion, eight hundred eighty-one million, eight hundred ninety-seven thousand, five hundred sixty-eight".