198527789479 has 16 divisors (see below), whose sum is σ = 202956399360. Its totient is φ = 194145952000.

The previous prime is 198527789459. The next prime is 198527789489. The reversal of 198527789479 is 974987725891.

It is a cyclic number.

It is not a de Polignac number, because 198527789479 - 2³¹ = 196380305831 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 (198527789419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28280832 + ... + 28287850.

It is an arithmetic number, because the mean of its divisors is an integer number (12684774960).

Almost surely, 2^198527789479 is an apocalyptic number.

198527789479 is a deficient number, since it is larger than the sum of its proper divisors (4428609881).

198527789479 is a wasteful number, since it uses less digits than its factorization.

198527789479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10262.

The product of its digits is 640120320, while the sum is 76.

The spelling of 198527789479 in words is "one hundred ninety-eight billion, five hundred twenty-seven million, seven hundred eighty-nine thousand, four hundred seventy-nine".