4481131536 has 180 divisors, whose sum is σ = 14774947200. Its totient is φ = 1263959424.

The previous prime is 4481131511. The next prime is 4481131621. The reversal of 4481131536 is 6351311844.

4481131536 is a `hidden beast` number, since 4 + 4 + 8 + 113 + 1 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 4481131536.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 553405 + ... + 561443.

It is an arithmetic number, because the mean of its divisors is an integer number (82083040).

Almost surely, 2^4481131536 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 4481131536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7387473600).

4481131536 is an abundant number, since it is smaller than the sum of its proper divisors (10293815664).

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

4481131536 is a wasteful number, since it uses less digits than its factorization.

4481131536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8146 (or 8130 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 4481131536 is about 66941.2543653015. The cubic root of 4481131536 is about 1648.6528993913.

The spelling of 4481131536 in words is "four billion, four hundred eighty-one million, one hundred thirty-one thousand, five hundred thirty-six".