198030858 has 16 divisors (see below), whose sum is σ = 419359680. Its totient is φ = 62127296.

The previous prime is 198030853. The next prime is 198030869. The reversal of 198030858 is 858030891.

It is not an unprimeable number, because it can be changed into a prime (198030853) 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, 970638 + ... + 970841.

It is an arithmetic number, because the mean of its divisors is an integer number (26209980).

Almost surely, 2^198030858 is an apocalyptic number.

198030858 is an abundant number, since it is smaller than the sum of its proper divisors (221328822).

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

198030858 is a wasteful number, since it uses less digits than its factorization.

198030858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941501.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 198030858 is about 14072.3437280362. The cubic root of 198030858 is about 582.8779453943.

The spelling of 198030858 in words is "one hundred ninety-eight million, thirty thousand, eight hundred fifty-eight".