198548078 has 8 divisors (see below), whose sum is σ = 300554760. Its totient is φ = 98363160.

The previous prime is 198548011. The next prime is 198548089. The reversal of 198548078 is 870845891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 455168 + ... + 455603.

It is an arithmetic number, because the mean of its divisors is an integer number (37569345).

Almost surely, 2^198548078 is an apocalyptic number.

198548078 is a deficient number, since it is larger than the sum of its proper divisors (102006682).

198548078 is a wasteful number, since it uses less digits than its factorization.

198548078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910882.

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 198548078 is about 14090.7089246780. The cubic root of 198548078 is about 583.3849607277.

The spelling of 198548078 in words is "one hundred ninety-eight million, five hundred forty-eight thousand, seventy-eight".