198322864 has 20 divisors (see below), whose sum is σ = 389116960. Its totient is φ = 97905600.

The previous prime is 198322853. The next prime is 198322879. The reversal of 198322864 is 468223891.

It is a self number, because there is not a number n which added to its sum of digits gives 198322864.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77187 + ... + 79714.

It is an arithmetic number, because the mean of its divisors is an integer number (19455848).

Almost surely, 2^198322864 is an apocalyptic number.

It is an amenable number.

198322864 is a deficient number, since it is larger than the sum of its proper divisors (190794096).

198322864 is a wasteful number, since it uses less digits than its factorization.

198322864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156988 (or 156982 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 198322864 is about 14082.7150791316. The cubic root of 198322864 is about 583.1642985240.

The spelling of 198322864 in words is "one hundred ninety-eight million, three hundred twenty-two thousand, eight hundred sixty-four".