198795774 has 16 divisors (see below), whose sum is σ = 397765008. Its totient is φ = 66236352.

The previous prime is 198795763. The next prime is 198795797. The reversal of 198795774 is 477597891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11344 + ... + 22940.

It is an arithmetic number, because the mean of its divisors is an integer number (24860313).

Almost surely, 2^198795774 is an apocalyptic number.

198795774 is an abundant number, since it is smaller than the sum of its proper divisors (198969234).

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

198795774 is a wasteful number, since it uses less digits than its factorization.

198795774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14459.

The product of its digits is 4445280, while the sum is 57.

The square root of 198795774 is about 14099.4955228902. The cubic root of 198795774 is about 583.6274579501.

The spelling of 198795774 in words is "one hundred ninety-eight million, seven hundred ninety-five thousand, seven hundred seventy-four".