818545436928 has 432 divisors, whose sum is σ = 2602852983360. Its totient is φ = 253653221376.

The previous prime is 818545436923. The next prime is 818545436959. The reversal of 818545436928 is 829634545818.

818545436928 is a `hidden beast` number, since 8 + 1 + 8 + 5 + 4 + 543 + 69 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is not an unprimeable number, because it can be changed into a prime (818545436921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 165795676 + ... + 165800612.

Almost surely, 2^818545436928 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 818545436928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301426491680).

818545436928 is an abundant number, since it is smaller than the sum of its proper divisors (1784307546432).

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

818545436928 is a wasteful number, since it uses less digits than its factorization.

818545436928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5079 (or 5042 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 63.

The spelling of 818545436928 in words is "eight hundred eighteen billion, five hundred forty-five million, four hundred thirty-six thousand, nine hundred twenty-eight".