3888943238520 has 768 divisors, whose sum is σ = 14174963712000. Its totient is φ = 955812358656.

The previous prime is 3888943238489. The next prime is 3888943238549. The reversal of 3888943238520 is 258323498883.

3888943238520 is a `hidden beast` number, since 3 + 8 + 8 + 89 + 4 + 3 + 23 + 8 + 520 = 666.

3888943238520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3888943238520² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1553711589 + ... + 1553714091.

It is an arithmetic number, because the mean of its divisors is an integer number (18456984000).

Almost surely, 2^{3888943238520} is an apocalyptic number.

3888943238520 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 3888943238520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7087481856000).

3888943238520 is an abundant number, since it is smaller than the sum of its proper divisors (10286020473480).

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

3888943238520 is a wasteful number, since it uses less digits than its factorization.

3888943238520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774 (or 2758 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 63.

The spelling of 3888943238520 in words is "three trillion, eight hundred eighty-eight billion, nine hundred forty-three million, two hundred thirty-eight thousand, five hundred twenty".