818530944529 has 3 divisors (see below), whose sum is σ = 818531849257. Its totient is φ = 818530039802.

The previous prime is 818530944481. The next prime is 818530944533. The reversal of 818530944529 is 925449035818.

It is a happy number.

The square root of 818530944529 is 904727.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 818530944529 - 2⁷ = 818530944401 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (818530944559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 452364 + ... + 1357090.

Almost surely, 2^818530944529 is an apocalyptic number.

818530944529 is the 904727-th square number.

818530944529 is the 452364-th centered octagonal number.

It is an amenable number.

818530944529 is a deficient number, since it is larger than the sum of its proper divisors (904728).

818530944529 is an frugal number, since it uses more digits than its factorization.

818530944529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809454 (or 904727 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 818530944529 in words is "eight hundred eighteen billion, five hundred thirty million, nine hundred forty-four thousand, five hundred twenty-nine".