4081854816 has 384 divisors, whose sum is σ = 13953945600. Its totient is φ = 1149603840.

The previous prime is 4081854811. The next prime is 4081854859. The reversal of 4081854816 is 6184581804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4081854811) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6615340 + ... + 6615956.

It is an arithmetic number, because the mean of its divisors is an integer number (36338400).

Almost surely, 2^4081854816 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 4081854816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6976972800).

4081854816 is an abundant number, since it is smaller than the sum of its proper divisors (9872090784).

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

4081854816 is a wasteful number, since it uses less digits than its factorization.

4081854816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 4081854816 is about 63889.3951763515. The cubic root of 4081854816 is about 1598.1560548996.

The spelling of 4081854816 in words is "four billion, eighty-one million, eight hundred fifty-four thousand, eight hundred sixteen".