189053648809 has 3 divisors (see below), whose sum is σ = 189054083613. Its totient is φ = 189053214006.

The previous prime is 189053648801. The next prime is 189053648821. The reversal of 189053648809 is 908846350981.

The square root of 189053648809 is 434803.

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 189053648809 - 2³ = 189053648801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189053648801) 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, 217402 + ... + 652204.

It is an arithmetic number, because the mean of its divisors is an integer number (63018027871).

Almost surely, 2^189053648809 is an apocalyptic number.

189053648809 is the 434803-rd square number.

189053648809 is the 217402-nd centered octagonal number.

It is an amenable number.

189053648809 is a deficient number, since it is larger than the sum of its proper divisors (434804).

189053648809 is an frugal number, since it uses more digits than its factorization.

189053648809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869606 (or 434803 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 61.

The spelling of 189053648809 in words is "one hundred eighty-nine billion, fifty-three million, six hundred forty-eight thousand, eight hundred nine".