4181224572 has 144 divisors (see below), whose sum is σ = 12516102144. Its totient is φ = 1151712000.

The previous prime is 4181224571. The next prime is 4181224601. The reversal of 4181224572 is 2754221814.

4181224572 is a `hidden beast` number, since 4 + 1 + 81 + 2 + 2 + 4 + 572 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4181224571) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2428672 + ... + 2430392.

It is an arithmetic number, because the mean of its divisors is an integer number (86917376).

Almost surely, 2^4181224572 is an apocalyptic number.

4181224572 is a gapful number since it is divisible by the number (42) 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 4181224572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6258051072).

4181224572 is an abundant number, since it is smaller than the sum of its proper divisors (8334877572).

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

4181224572 is a wasteful number, since it uses less digits than its factorization.

4181224572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080 (or 2075 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 4181224572 is about 64662.3891609334. The cubic root of 4181224572 is about 1611.0208630450.

The spelling of 4181224572 in words is "four billion, one hundred eighty-one million, two hundred twenty-four thousand, five hundred seventy-two".