2305632289 has 3 divisors (see below), whose sum is σ = 2305680307. Its totient is φ = 2305584272.

The previous prime is 2305632281. The next prime is 2305632317. The reversal of 2305632289 is 9822365032.

It is a happy number.

The square root of 2305632289 is 48017.

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., 387893025 + 1917739264 = 19695^2 + 43792^2 .

It is not a de Polignac number, because 2305632289 - 2³ = 2305632281 is a prime.

It is a Smith number, since the sum of its digits (40) 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 (2305632281) 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, 24009 + ... + 72025.

Almost surely, 2^2305632289 is an apocalyptic number.

2305632289 is the 48017-th square number.

2305632289 is the 24009-th centered octagonal number.

It is an amenable number.

2305632289 is a deficient number, since it is larger than the sum of its proper divisors (48018).

2305632289 is an frugal number, since it uses more digits than its factorization.

2305632289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96034 (or 48017 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The cubic root of 2305632289 is about 1321.0827298376.

The spelling of 2305632289 in words is "two billion, three hundred five million, six hundred thirty-two thousand, two hundred eighty-nine".