198506845 has 8 divisors (see below), whose sum is σ = 238337280. Its totient is φ = 158719440.

The previous prime is 198506843. The next prime is 198506879. The reversal of 198506845 is 548605891.

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

It is not a de Polignac number, because 198506845 - 2¹ = 198506843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198506795 and 198506804.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460 + ... + 19930.

It is an arithmetic number, because the mean of its divisors is an integer number (29792160).

Almost surely, 2^198506845 is an apocalyptic number.

It is an amenable number.

198506845 is a deficient number, since it is larger than the sum of its proper divisors (39830435).

198506845 is a wasteful number, since it uses less digits than its factorization.

198506845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21515.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 198506845 is about 14089.2457214714. The cubic root of 198506845 is about 583.3445735703.

The spelling of 198506845 in words is "one hundred ninety-eight million, five hundred six thousand, eight hundred forty-five".