818598380028 has 144 divisors (see below), whose sum is σ = 2393990232480. Its totient is φ = 215509155840.

The previous prime is 818598380021. The next prime is 818598380051. The reversal of 818598380028 is 820083895818.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818598380021) 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, 954613 + ... + 1596396.

It is an arithmetic number, because the mean of its divisors is an integer number (16624932170).

Almost surely, 2^818598380028 is an apocalyptic number.

It is an amenable number.

818598380028 is an abundant number, since it is smaller than the sum of its proper divisors (1575391852452).

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

818598380028 is a wasteful number, since it uses less digits than its factorization.

818598380028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551068 (or 2551055 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 60.

The spelling of 818598380028 in words is "eight hundred eighteen billion, five hundred ninety-eight million, three hundred eighty thousand, twenty-eight".