8818721933 has 24 divisors (see below), whose sum is σ = 10868935104. Its totient is φ = 7109692800.

The previous prime is 8818721881. The next prime is 8818721941. The reversal of 8818721933 is 3391278188.

It is not a de Polignac number, because 8818721933 - 2¹⁴ = 8818705549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8818721963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2006168 + ... + 2010558.

It is an arithmetic number, because the mean of its divisors is an integer number (452872296).

Almost surely, 2^8818721933 is an apocalyptic number.

It is an amenable number.

8818721933 is a deficient number, since it is larger than the sum of its proper divisors (2050213171).

8818721933 is a wasteful number, since it uses less digits than its factorization.

8818721933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6833 (or 6826 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 8818721933 is about 93908.0504163514. The cubic root of 8818721933 is about 2066.0233058999.

The spelling of 8818721933 in words is "eight billion, eight hundred eighteen million, seven hundred twenty-one thousand, nine hundred thirty-three".