839800224018 has 162 divisors, whose sum is σ = 2157247379079. Its totient is φ = 235425086064.

The previous prime is 839800223993. The next prime is 839800224019. The reversal of 839800224018 is 810422008938.

839800224018 is a `hidden beast` number, since 8 + 398 + 0 + 0 + 2 + 240 + 18 = 666.

It can be written as a sum of positive squares in only one way, i.e., 419900112009 + 419900112009 = 647997^2 + 647997^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=647997.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (839800224019) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1605736305 + ... + 1605736827.

Almost surely, 2^839800224018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 839800224018

839800224018 is an abundant number, since it is smaller than the sum of its proper divisors (1317447155061).

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

839800224018 is an equidigital number, since it uses as much as digits as its factorization.

839800224018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 839800224018 in words is "eight hundred thirty-nine billion, eight hundred million, two hundred twenty-four thousand, eighteen".