198190486 has 8 divisors (see below), whose sum is σ = 320153904. Its totient is φ = 91472520.

The previous prime is 198190477. The next prime is 198190507. The reversal of 198190486 is 684091891.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3811330 + ... + 3811381.

It is an arithmetic number, because the mean of its divisors is an integer number (40019238).

Almost surely, 2^198190486 is an apocalyptic number.

198190486 is a deficient number, since it is larger than the sum of its proper divisors (121963418).

198190486 is a wasteful number, since it uses less digits than its factorization.

198190486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7622726.

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 198190486 is about 14078.0142775890. The cubic root of 198190486 is about 583.0345180496.

The spelling of 198190486 in words is "one hundred ninety-eight million, one hundred ninety thousand, four hundred eighty-six".