198005494 has 16 divisors (see below), whose sum is σ = 324625536. Its totient is φ = 90172800.

The previous prime is 198005473. The next prime is 198005503. The reversal of 198005494 is 494500891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92877 + ... + 94984.

It is an arithmetic number, because the mean of its divisors is an integer number (20289096).

Almost surely, 2^198005494 is an apocalyptic number.

198005494 is a deficient number, since it is larger than the sum of its proper divisors (126620042).

198005494 is a wasteful number, since it uses less digits than its factorization.

198005494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187911.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 198005494 is about 14071.4424989054. The cubic root of 198005494 is about 582.8530591256.

The spelling of 198005494 in words is "one hundred ninety-eight million, five thousand, four hundred ninety-four".