818054564 has 6 divisors (see below), whose sum is σ = 1431595494. Its totient is φ = 409027280.

The previous prime is 818054561. The next prime is 818054579. The reversal of 818054564 is 465450818.

It can be written as a sum of positive squares in only one way, i.e., 750321664 + 67732900 = 27392^2 + 8230^2 .

It is not an unprimeable number, because it can be changed into a prime (818054561) 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 as a sum of consecutive naturals, namely, 102256817 + ... + 102256824.

It is an arithmetic number, because the mean of its divisors is an integer number (238599249).

Almost surely, 2^818054564 is an apocalyptic number.

It is an amenable number.

818054564 is a deficient number, since it is larger than the sum of its proper divisors (613540930).

818054564 is a wasteful number, since it uses less digits than its factorization.

818054564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204513645 (or 204513643 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 818054564 is about 28601.6531690041. The cubic root of 818054564 is about 935.2493692720.

The spelling of 818054564 in words is "eight hundred eighteen million, fifty-four thousand, five hundred sixty-four".