818218350 has 72 divisors (see below), whose sum is σ = 2209568400. Its totient is φ = 217071360.

The previous prime is 818218339. The next prime is 818218367. The reversal of 818218350 is 53812818.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 84982 + ... + 94118.

It is an arithmetic number, because the mean of its divisors is an integer number (30688450).

Almost surely, 2^818218350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818218350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104784200).

818218350 is an abundant number, since it is smaller than the sum of its proper divisors (1391350050).

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

818218350 is a wasteful number, since it uses less digits than its factorization.

818218350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9354 (or 9346 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 818218350 is about 28604.5162518089. The cubic root of 818218350 is about 935.3117817883.

The spelling of 818218350 in words is "eight hundred eighteen million, two hundred eighteen thousand, three hundred fifty".