3889243680 has 576 divisors, whose sum is σ = 15413836032. Its totient is φ = 818872320.

The previous prime is 3889243667. The next prime is 3889243727. The reversal of 3889243680 is 863429883.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28388572 + ... + 28388708.

It is an arithmetic number, because the mean of its divisors is an integer number (26760132).

Almost surely, 2^3889243680 is an apocalyptic number.

3889243680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3889243680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7706918016).

3889243680 is an abundant number, since it is smaller than the sum of its proper divisors (11524592352).

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

3889243680 is a wasteful number, since it uses less digits than its factorization.

3889243680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 51.

The square root of 3889243680 is about 62363.8010387436. The cubic root of 3889243680 is about 1572.6124813910.

The spelling of 3889243680 in words is "three billion, eight hundred eighty-nine million, two hundred forty-three thousand, six hundred eighty".