818404860 has 480 divisors, whose sum is σ = 3162216960. Its totient is φ = 156473856.

The previous prime is 818404849. The next prime is 818404877. The reversal of 818404860 is 68404818.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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 159 ways as a sum of consecutive naturals, for example, 35582809 + ... + 35582831.

It is an arithmetic number, because the mean of its divisors is an integer number (6587952).

Almost surely, 2^818404860 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 818404860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1581108480).

818404860 is an abundant number, since it is smaller than the sum of its proper divisors (2343812100).

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

818404860 is a wasteful number, since it uses less digits than its factorization.

818404860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 818404860 is about 28607.7762155677. The cubic root of 818404860 is about 935.3828434014.

The spelling of 818404860 in words is "eight hundred eighteen million, four hundred four thousand, eight hundred sixty".