18242952965329 has 3 divisors (see below), whose sum is σ = 18242957236507. Its totient is φ = 18242948694152.

The previous prime is 18242952965297. The next prime is 18242952965333. The reversal of 18242952965329 is 92356925924281.

The square root of 18242952965329 is 4271177.

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 can be written as a sum of positive squares in only one way, i.e., 2195301539025 + 16047651426304 = 1481655^2 + 4005952^2 .

It is not a de Polignac number, because 18242952965329 - 2⁵ = 18242952965297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18242952905329) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2135589 + ... + 6406765.

Almost surely, 2^{18242952965329} is an apocalyptic number.

18242952965329 is the 4271177-th square number.

18242952965329 is the 2135589-th centered octagonal number.

It is an amenable number.

18242952965329 is a deficient number, since it is larger than the sum of its proper divisors (4271178).

18242952965329 is an frugal number, since it uses more digits than its factorization.

18242952965329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8542354 (or 4271177 counting only the distinct ones).

The product of its digits is 167961600, while the sum is 67.

The spelling of 18242952965329 in words is "eighteen trillion, two hundred forty-two billion, nine hundred fifty-two million, nine hundred sixty-five thousand, three hundred twenty-nine".