198783271 has 4 divisors (see below), whose sum is σ = 199067544. Its totient is φ = 198499000.

The previous prime is 198783269. The next prime is 198783283. The reversal of 198783271 is 172387891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198783271 - 2¹ = 198783269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198783241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141085 + ... + 142486.

It is an arithmetic number, because the mean of its divisors is an integer number (49766886).

Almost surely, 2^198783271 is an apocalyptic number.

198783271 is a deficient number, since it is larger than the sum of its proper divisors (284273).

198783271 is an equidigital number, since it uses as much as digits as its factorization.

198783271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284272.

The product of its digits is 169344, while the sum is 46.

The square root of 198783271 is about 14099.0521312605. The cubic root of 198783271 is about 583.6152221985.

It can be divided in two parts, 1987 and 83271, that added together give a palindrome (85258).

The spelling of 198783271 in words is "one hundred ninety-eight million, seven hundred eighty-three thousand, two hundred seventy-one".