198659814 has 16 divisors (see below), whose sum is σ = 397975152. Its totient is φ = 66110688.

The previous prime is 198659789. The next prime is 198659819. The reversal of 198659814 is 418956891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198659819) 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, 23329 + ... + 30684.

It is an arithmetic number, because the mean of its divisors is an integer number (24873447).

Almost surely, 2^198659814 is an apocalyptic number.

198659814 is an abundant number, since it is smaller than the sum of its proper divisors (199315338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198659814 is a wasteful number, since it uses less digits than its factorization.

198659814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54631.

The product of its digits is 622080, while the sum is 51.

The square root of 198659814 is about 14094.6732491392. The cubic root of 198659814 is about 583.4943765066.

The spelling of 198659814 in words is "one hundred ninety-eight million, six hundred fifty-nine thousand, eight hundred fourteen".