3898643841 has 24 divisors (see below), whose sum is σ = 5700464640. Its totient is φ = 2567388096.

The previous prime is 3898643809. The next prime is 3898643857. The reversal of 3898643841 is 1483468983.

3898643841 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3898643841 - 2⁵ = 3898643809 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3898643141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 259000 + ... + 273638.

It is an arithmetic number, because the mean of its divisors is an integer number (237519360).

Almost surely, 2^3898643841 is an apocalyptic number.

It is an amenable number.

3898643841 is a deficient number, since it is larger than the sum of its proper divisors (1801820799).

3898643841 is a wasteful number, since it uses less digits than its factorization.

3898643841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15005 (or 15002 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 3898643841 is about 62439.1210780549. The cubic root of 3898643841 is about 1573.8784444640.

The spelling of 3898643841 in words is "three billion, eight hundred ninety-eight million, six hundred forty-three thousand, eight hundred forty-one".