9235198868809 has 3 divisors (see below), whose sum is σ = 9235201907757. Its totient is φ = 9235195829862.

The previous prime is 9235198868761. The next prime is 9235198868827. The reversal of 9235198868809 is 9088688915329.

The square root of 9235198868809 is 3038947.

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 9235198868809 - 2⁹ = 9235198868297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9235198868849) 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, 1519474 + ... + 4558420.

It is an arithmetic number, because the mean of its divisors is an integer number (3078400635919).

Almost surely, 2^{9235198868809} is an apocalyptic number.

9235198868809 is the 3038947-th square number.

9235198868809 is the 1519474-th centered octagonal number.

It is an amenable number.

9235198868809 is a deficient number, since it is larger than the sum of its proper divisors (3038948).

9235198868809 is an frugal number, since it uses more digits than its factorization.

9235198868809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6077894 (or 3038947 counting only the distinct ones).

The product of its (nonzero) digits is 537477120, while the sum is 76.

The spelling of 9235198868809 in words is "nine trillion, two hundred thirty-five billion, one hundred ninety-eight million, eight hundred sixty-eight thousand, eight hundred nine".