298228278818 has 6 divisors (see below), whose sum is σ = 447343576689. Its totient is φ = 149113753256.

The previous prime is 298228278811. The next prime is 298228278871. The reversal of 298228278818 is 818872822892.

It can be written as a sum of positive squares in 2 ways, for example, as 286849149889 + 11379128929 = 535583^2 + 106673^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=386153.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (298228278811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 579230 + ... + 965382.

Almost surely, 2^298228278818 is an apocalyptic number.

298228278818 is a deficient number, since it is larger than the sum of its proper divisors (149115297871).

298228278818 is an frugal number, since it uses more digits than its factorization.

298228278818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772308 (or 386155 counting only the distinct ones).

The product of its digits is 33030144, while the sum is 65.

The spelling of 298228278818 in words is "two hundred ninety-eight billion, two hundred twenty-eight million, two hundred seventy-eight thousand, eight hundred eighteen".