3981119544 has 96 divisors (see below), whose sum is σ = 11212830720. Its totient is φ = 1323327456.

The previous prime is 3981119543. The next prime is 3981119587. The reversal of 3981119544 is 4459111893.

3981119544 is a `hidden beast` number, since 3 + 98 + 1 + 1 + 19 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 3981119544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3981119543) 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, 741879 + ... + 747225.

It is an arithmetic number, because the mean of its divisors is an integer number (116800320).

Almost surely, 2^3981119544 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 3981119544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5606415360).

3981119544 is an abundant number, since it is smaller than the sum of its proper divisors (7231711176).

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

3981119544 is a wasteful number, since it uses less digits than its factorization.

3981119544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751 (or 5735 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 3981119544 is about 63096.1135411683. The cubic root of 3981119544 is about 1584.8995407143.

The spelling of 3981119544 in words is "three billion, nine hundred eighty-one million, one hundred nineteen thousand, five hundred forty-four".