198733049647441 has 3 divisors (see below), whose sum is σ = 198733063744713. Its totient is φ = 198733035550170.

The previous prime is 198733049647421. The next prime is 198733049647453. The reversal of 198733049647441 is 144746940337891.

The square root of 198733049647441 is 14097271.

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 198733049647441 - 2⁵ = 198733049647409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198733049647421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7048636 + ... + 21145906.

It is an arithmetic number, because the mean of its divisors is an integer number (66244354581571).

Almost surely, 2^{198733049647441} is an apocalyptic number.

198733049647441 is the 14097271-st square number.

198733049647441 is the 7048636-th centered octagonal number.

It is an amenable number.

198733049647441 is a deficient number, since it is larger than the sum of its proper divisors (14097272).

198733049647441 is an frugal number, since it uses more digits than its factorization.

198733049647441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28194542 (or 14097271 counting only the distinct ones).

The product of its (nonzero) digits is 438939648, while the sum is 70.

The spelling of 198733049647441 in words is "one hundred ninety-eight trillion, seven hundred thirty-three billion, forty-nine million, six hundred forty-seven thousand, four hundred forty-one".