9812091135 has 128 divisors (see below), whose sum is σ = 20177786880. Its totient is φ = 3953664000.

The previous prime is 9812091119. The next prime is 9812091167. The reversal of 9812091135 is 5311902189.

9812091135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 99056²-1.

It is not a de Polignac number, because 9812091135 - 2⁴ = 9812091119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9812091093 and 9812091102.

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 5447235 + ... + 5449035.

It is an arithmetic number, because the mean of its divisors is an integer number (157638960).

Almost surely, 2^9812091135 is an apocalyptic number.

9812091135 is an abundant number, since it is smaller than the sum of its proper divisors (10365695745).

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

9812091135 is a wasteful number, since it uses less digits than its factorization.

9812091135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 9812091135 is about 99055.9999949524. Note that the first 5 decimals coincide. The cubic root of 9812091135 is about 2140.8546921546.

The spelling of 9812091135 in words is "nine billion, eight hundred twelve million, ninety-one thousand, one hundred thirty-five".