818452004 has 18 divisors (see below), whose sum is σ = 1468089042. Its totient is φ = 399241600.

The previous prime is 818451989. The next prime is 818452009. The reversal of 818452004 is 400254818.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 28729600 + 789722404 = 5360^2 + 28102^2 .

It is not an unprimeable number, because it can be changed into a prime (818452009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54137 + ... + 67584.

Almost surely, 2^818452004 is an apocalyptic number.

It is an amenable number.

818452004 is a deficient number, since it is larger than the sum of its proper divisors (649637038).

818452004 is a wasteful number, since it uses less digits than its factorization.

818452004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121807 (or 121764 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 818452004 is about 28608.6001754717. The cubic root of 818452004 is about 935.4008038853.

The spelling of 818452004 in words is "eight hundred eighteen million, four hundred fifty-two thousand, four".