9984794818 has 8 divisors (see below), whose sum is σ = 15086515212. Its totient is φ = 4955956416.

The previous prime is 9984794779. The next prime is 9984794837. The reversal of 9984794818 is 8184974899.

It can be written as a sum of positive squares in 2 ways, for example, as 9973417689 + 11377129 = 99867^2 + 3373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×9984794818² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18220155 + ... + 18220702.

Almost surely, 2^9984794818 is an apocalyptic number.

9984794818 is a deficient number, since it is larger than the sum of its proper divisors (5101720394).

9984794818 is a wasteful number, since it uses less digits than its factorization.

9984794818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36440996.

The product of its digits is 41803776, while the sum is 67.

The square root of 9984794818 is about 99923.9451683129. The cubic root of 9984794818 is about 2153.3421837338.

The spelling of 9984794818 in words is "nine billion, nine hundred eighty-four million, seven hundred ninety-four thousand, eight hundred eighteen".