9812091136 has 81 divisors (see below), whose sum is σ = 20209037709. Its totient is φ = 4754688000.

The previous prime is 9812091119. The next prime is 9812091167. The reversal of 9812091136 is 6311902189.

The square root of 9812091136 is 99056.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 472801536 + 9339289600 = 21744^2 + 96640^2 .

It is a super-2 number, since 2×9812091136² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 64980661 + ... + 64980811.

Almost surely, 2^9812091136 is an apocalyptic number.

9812091136 is the 99056-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9812091136

9812091136 is an abundant number, since it is smaller than the sum of its proper divisors (10396946573).

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

9812091136 is an frugal number, since it uses more digits than its factorization.

9812091136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The cubic root of 9812091136 is about 2140.8546922274.

The spelling of 9812091136 in words is "nine billion, eight hundred twelve million, ninety-one thousand, one hundred thirty-six".