818516180 has 48 divisors (see below), whose sum is σ = 1835374464. Its totient is φ = 305880960.

The previous prime is 818516161. The next prime is 818516197. The reversal of 818516180 is 81615818.

It is a Smith number, since the sum of its digits (38) 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 15 ways as a sum of consecutive naturals, for example, 911 + ... + 40470.

It is an arithmetic number, because the mean of its divisors is an integer number (38236968).

Almost surely, 2^818516180 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 818516180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (917687232).

818516180 is an abundant number, since it is smaller than the sum of its proper divisors (1016858284).

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

818516180 is a wasteful number, since it uses less digits than its factorization.

818516180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41456 (or 41454 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 38.

The square root of 818516180 is about 28609.7217742501. The cubic root of 818516180 is about 935.4252519542.

The spelling of 818516180 in words is "eight hundred eighteen million, five hundred sixteen thousand, one hundred eighty".