3889658920 has 64 divisors (see below), whose sum is σ = 10029064320. Its totient is φ = 1329986304.

The previous prime is 3889658917. The next prime is 3889658921. The reversal of 3889658920 is 298569883.

It is not an unprimeable number, because it can be changed into a prime (3889658921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85819 + ... + 123061.

It is an arithmetic number, because the mean of its divisors is an integer number (156704130).

Almost surely, 2^3889658920 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 3889658920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5014532160).

3889658920 is an abundant number, since it is smaller than the sum of its proper divisors (6139405400).

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

3889658920 is a wasteful number, since it uses less digits than its factorization.

3889658920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37634 (or 37630 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 58.

The square root of 3889658920 is about 62367.1301247701. The cubic root of 3889658920 is about 1572.6684467167.

The spelling of 3889658920 in words is "three billion, eight hundred eighty-nine million, six hundred fifty-eight thousand, nine hundred twenty".