9000821181 has 16 divisors (see below), whose sum is σ = 13129208640. Its totient is φ = 5439582720.

The previous prime is 9000821149. The next prime is 9000821191. The reversal of 9000821181 is 1811280009.

9000821181 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9000821181 - 2⁵ = 9000821149 is a prime.

It is a super-2 number, since 2×9000821181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9000821101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374686 + ... + 397983.

It is an arithmetic number, because the mean of its divisors is an integer number (820575540).

Almost surely, 2^9000821181 is an apocalyptic number.

It is an amenable number.

9000821181 is a deficient number, since it is larger than the sum of its proper divisors (4128387459).

9000821181 is a wasteful number, since it uses less digits than its factorization.

9000821181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773036.

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 9000821181 is about 94872.6577102170. The cubic root of 9000821181 is about 2080.1470850284.

The spelling of 9000821181 in words is "nine billion, eight hundred twenty-one thousand, one hundred eighty-one".