818789395452 has 96 divisors (see below), whose sum is σ = 2299172359680. Its totient is φ = 221548504320.

The previous prime is 818789395447. The next prime is 818789395511. The reversal of 818789395452 is 254593987818.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4476498 + ... + 4655814.

It is an arithmetic number, because the mean of its divisors is an integer number (23949712080).

Almost surely, 2^818789395452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818789395452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149586179840).

818789395452 is an abundant number, since it is smaller than the sum of its proper divisors (1480382964228).

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

818789395452 is a wasteful number, since it uses less digits than its factorization.

818789395452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182211 (or 182209 counting only the distinct ones).

The product of its digits is 174182400, while the sum is 69.

The spelling of 818789395452 in words is "eight hundred eighteen billion, seven hundred eighty-nine million, three hundred ninety-five thousand, four hundred fifty-two".