818489652 has 48 divisors (see below), whose sum is σ = 1989937152. Its totient is φ = 261548640.

The previous prime is 818489629. The next prime is 818489663. The reversal of 818489652 is 256984818.

It is a super-2 number, since 2×818489652² = 1339850620862162208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 818489595 and 818489604.

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, 29523 + ... + 50085.

It is an arithmetic number, because the mean of its divisors is an integer number (41457024).

Almost surely, 2^818489652 is an apocalyptic number.

It is an amenable number.

818489652 is an abundant number, since it is smaller than the sum of its proper divisors (1171447500).

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

818489652 is a wasteful number, since it uses less digits than its factorization.

818489652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20708 (or 20706 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 51.

The square root of 818489652 is about 28609.2581518641. The cubic root of 818489652 is about 935.4151461759.

The spelling of 818489652 in words is "eight hundred eighteen million, four hundred eighty-nine thousand, six hundred fifty-two".