189210210289 has 9 divisors (see below), whose sum is σ = 190076719819. Its totient is φ = 188347639000.

The previous prime is 189210210281. The next prime is 189210210313. The reversal of 189210210289 is 982012012981.

The square root of 189210210289 is 434983.

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

It can be written as a sum of positive squares in only one way, i.e., 84044909025 + 105165301264 = 289905^2 + 324292^2 .

It is not a de Polignac number, because 189210210289 - 2³ = 189210210281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189210210281) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 109179867 + ... + 109181599.

Almost surely, 2^189210210289 is an apocalyptic number.

189210210289 is the 434983-rd square number.

189210210289 is the 217492-nd centered octagonal number.

It is an amenable number.

189210210289 is a deficient number, since it is larger than the sum of its proper divisors (866509530).

189210210289 is an frugal number, since it uses more digits than its factorization.

189210210289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968 (or 1984 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The spelling of 189210210289 in words is "one hundred eighty-nine billion, two hundred ten million, two hundred ten thousand, two hundred eighty-nine".