198506847 has 32 divisors (see below), whose sum is σ = 330799104. Its totient is φ = 102866400.

The previous prime is 198506843. The next prime is 198506879. The reversal of 198506847 is 748605891.

It is not a de Polignac number, because 198506847 - 2² = 198506843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198506796 and 198506805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198506843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125572 + ... + 127142.

It is an arithmetic number, because the mean of its divisors is an integer number (10337472).

Almost surely, 2^198506847 is an apocalyptic number.

198506847 is a deficient number, since it is larger than the sum of its proper divisors (132292257).

198506847 is a wasteful number, since it uses less digits than its factorization.

198506847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 198506847 is about 14089.2457924475. The cubic root of 198506847 is about 583.3445755294.

The spelling of 198506847 in words is "one hundred ninety-eight million, five hundred six thousand, eight hundred forty-seven".