198363825807 has 24 divisors (see below), whose sum is σ = 307931152896. Its totient is φ = 113253195888.

The previous prime is 198363825799. The next prime is 198363825809. The reversal of 198363825807 is 708528363891.

It is not a de Polignac number, because 198363825807 - 2³ = 198363825799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198363825809) 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 23 ways as a sum of consecutive naturals, for example, 409183 + ... + 751104.

It is an arithmetic number, because the mean of its divisors is an integer number (12830464704).

Almost surely, 2^198363825807 is an apocalyptic number.

198363825807 is a deficient number, since it is larger than the sum of its proper divisors (109567327089).

198363825807 is a wasteful number, since it uses less digits than its factorization.

198363825807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161467 (or 1161460 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 198363825807 in words is "one hundred ninety-eight billion, three hundred sixty-three million, eight hundred twenty-five thousand, eight hundred seven".