3881917959420 has 192 divisors, whose sum is σ = 11941596979200. Its totient is φ = 937844920320.

The previous prime is 3881917959389. The next prime is 3881917959433. The reversal of 3881917959420 is 249597191883.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9592741 + ... + 9989219.

It is an arithmetic number, because the mean of its divisors is an integer number (62195817600).

Almost surely, 2^{3881917959420} is an apocalyptic number.

3881917959420 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 3881917959420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5970798489600).

3881917959420 is an abundant number, since it is smaller than the sum of its proper divisors (8059679019780).

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

3881917959420 is a wasteful number, since it uses less digits than its factorization.

3881917959420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396868 (or 396866 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 66.

The spelling of 3881917959420 in words is "three trillion, eight hundred eighty-one billion, nine hundred seventeen million, nine hundred fifty-nine thousand, four hundred twenty".