4033181820 has 24 divisors (see below), whose sum is σ = 11292909264. Its totient is φ = 1075515136.

The previous prime is 4033181783. The next prime is 4033181821. The reversal of 4033181820 is 281813304.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4033181821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33609789 + ... + 33609908.

It is an arithmetic number, because the mean of its divisors is an integer number (470537886).

Almost surely, 2^4033181820 is an apocalyptic number.

It is an amenable number.

4033181820 is an abundant number, since it is smaller than the sum of its proper divisors (7259727444).

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

4033181820 is a wasteful number, since it uses less digits than its factorization.

4033181820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67219709 (or 67219707 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 4033181820 is about 63507.3367415136. The cubic root of 4033181820 is about 1591.7783748917.

The spelling of 4033181820 in words is "four billion, thirty-three million, one hundred eighty-one thousand, eight hundred twenty".