243574822089 has 39 divisors (see below), whose sum is σ = 365902479127. Its totient is φ = 162143357688.

The previous prime is 243574822067. The next prime is 243574822093. The reversal of 243574822089 is 980228475342.

The square root of 243574822089 is 493533.

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

243574822089 is a `hidden beast` number, since 2 + 4 + 357 + 4 + 82 + 208 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 242137805625 + 1437016464 = 492075^2 + 37908^2 .

It is not a de Polignac number, because 243574822089 - 2¹⁵ = 243574789321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243574820089) by changing a digit.

It is a polite number, since it can be written in 38 ways as a sum of consecutive naturals, for example, 359785219 + ... + 359785895.

Almost surely, 2^243574822089 is an apocalyptic number.

243574822089 is the 493533-rd square number.

243574822089 is the 246767-th centered octagonal number.

It is an amenable number.

243574822089 is a deficient number, since it is larger than the sum of its proper divisors (122327657038).

243574822089 is an frugal number, since it uses more digits than its factorization.

243574822089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 243574822089 in words is "two hundred forty-three billion, five hundred seventy-four million, eight hundred twenty-two thousand, eighty-nine".