9221634818 has 18 divisors (see below), whose sum is σ = 15206729097. Its totient is φ = 4190973160.

The previous prime is 9221634791. The next prime is 9221634833. The reversal of 9221634818 is 8184361229.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5436555289 + 3785079529 = 73733^2 + 61523^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=67903.

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, 1490780 + ... + 1496952.

Almost surely, 2^9221634818 is an apocalyptic number.

9221634818 is a deficient number, since it is larger than the sum of its proper divisors (5985094279).

9221634818 is an frugal number, since it uses more digits than its factorization.

9221634818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12370 (or 6186 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 9221634818 is about 96029.3435258203. The cubic root of 9221634818 is about 2097.0203257874.

The spelling of 9221634818 in words is "nine billion, two hundred twenty-one million, six hundred thirty-four thousand, eight hundred eighteen".