198950855 has 4 divisors (see below), whose sum is σ = 238741032. Its totient is φ = 159160680.

The previous prime is 198950827. The next prime is 198950861. The reversal of 198950855 is 558059891.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 198950855 - 2²⁰ = 197902279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19895081 + ... + 19895090.

It is an arithmetic number, because the mean of its divisors is an integer number (59685258).

Almost surely, 2^198950855 is an apocalyptic number.

198950855 is a deficient number, since it is larger than the sum of its proper divisors (39790177).

198950855 is an equidigital number, since it uses as much as digits as its factorization.

198950855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39790176.

The product of its (nonzero) digits is 648000, while the sum is 50.

The square root of 198950855 is about 14104.9939737669. The cubic root of 198950855 is about 583.7791815047.

The spelling of 198950855 in words is "one hundred ninety-eight million, nine hundred fifty thousand, eight hundred fifty-five".