18294726564 has 27 divisors (see below), whose sum is σ = 46247054763. Its totient is φ = 6097971672.

The previous prime is 18294726557. The next prime is 18294726577. The reversal of 18294726564 is 46562749281.

The square root of 18294726564 is 135258.

It is a perfect power (a square), and thus also a powerful number.

18294726564 is a `hidden beast` number, since 1 + 8 + 2 + 9 + 4 + 72 + 6 + 564 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18294726564.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 800277 + ... + 822819.

Almost surely, 2^18294726564 is an apocalyptic number.

18294726564 is the 135258-th square number.

It is an amenable number.

18294726564 is an abundant number, since it is smaller than the sum of its proper divisors (27952328199).

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

18294726564 is an frugal number, since it uses more digits than its factorization.

18294726564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45096 (or 22548 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 18294726564 in words is "eighteen billion, two hundred ninety-four million, seven hundred twenty-six thousand, five hundred sixty-four".