9216838836 has 18 divisors (see below), whose sum is σ = 23298120482. Its totient is φ = 3072279600.

The previous prime is 9216838831. The next prime is 9216838837. The reversal of 9216838836 is 6388386129.

It is a happy number.

9216838836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5652032400 + 3564806436 = 75180^2 + 59706^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9216838831) 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 5 ways as a sum of consecutive naturals, for example, 128011615 + ... + 128011686.

Almost surely, 2^9216838836 is an apocalyptic number.

It is an amenable number.

9216838836 is an abundant number, since it is smaller than the sum of its proper divisors (14081281646).

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

9216838836 is a wasteful number, since it uses less digits than its factorization.

9216838836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256023311 (or 256023306 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 9216838836 is about 96004.3688380899. The cubic root of 9216838836 is about 2096.6567237448.

The spelling of 9216838836 in words is "nine billion, two hundred sixteen million, eight hundred thirty-eight thousand, eight hundred thirty-six".