198363825805 has 8 divisors (see below), whose sum is σ = 238134845952. Its totient is φ = 158625557328.

The previous prime is 198363825799. The next prime is 198363825809. The reversal of 198363825805 is 508528363891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198363825805 - 2⁹ = 198363825293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198363825805.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8174589 + ... + 8198818.

It is an arithmetic number, because the mean of its divisors is an integer number (29766855744).

Almost surely, 2^198363825805 is an apocalyptic number.

It is an amenable number.

198363825805 is a deficient number, since it is larger than the sum of its proper divisors (39771020147).

198363825805 is a wasteful number, since it uses less digits than its factorization.

198363825805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16375835.

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 198363825805 in words is "one hundred ninety-eight billion, three hundred sixty-three million, eight hundred twenty-five thousand, eight hundred five".