918884564 has 12 divisors (see below), whose sum is σ = 1731744084. Its totient is φ = 424100544.

The previous prime is 918884563. The next prime is 918884573. The reversal of 918884564 is 465488819.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 544848964 + 374035600 = 23342^2 + 19340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918884563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8835377 + ... + 8835480.

It is an arithmetic number, because the mean of its divisors is an integer number (144312007).

Almost surely, 2^918884564 is an apocalyptic number.

It is an amenable number.

918884564 is a deficient number, since it is larger than the sum of its proper divisors (812859520).

918884564 is a wasteful number, since it uses less digits than its factorization.

918884564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17670874 (or 17670872 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 53.

The square root of 918884564 is about 30313.1087815156. The cubic root of 918884564 is about 972.1956018258.

The spelling of 918884564 in words is "nine hundred eighteen million, eight hundred eighty-four thousand, five hundred sixty-four".