818905932 has 72 divisors (see below), whose sum is σ = 2281142864. Its totient is φ = 246105216.

The previous prime is 818905891. The next prime is 818905933. The reversal of 818905932 is 239509818.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (818905933) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223 + ... + 40470.

Almost surely, 2^818905932 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 818905932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1140571432).

818905932 is an abundant number, since it is smaller than the sum of its proper divisors (1462236932).

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

818905932 is a wasteful number, since it uses less digits than its factorization.

818905932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40759 (or 40754 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 818905932 is about 28616.5324943467. The cubic root of 818905932 is about 935.5737018848.

The spelling of 818905932 in words is "eight hundred eighteen million, nine hundred five thousand, nine hundred thirty-two".