199049218 has 8 divisors (see below), whose sum is σ = 300753612. Its totient is φ = 98798016.

The previous prime is 199049143. The next prime is 199049231. The reversal of 199049218 is 812940991.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 194239969 + 4809249 = 13937^2 + 2193^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362955 + ... + 363502.

Almost surely, 2^199049218 is an apocalyptic number.

199049218 is a deficient number, since it is larger than the sum of its proper divisors (101704394).

199049218 is a wasteful number, since it uses less digits than its factorization.

199049218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726596.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 199049218 is about 14108.4803575722. The cubic root of 199049218 is about 583.8753741229.

The spelling of 199049218 in words is "one hundred ninety-nine million, forty-nine thousand, two hundred eighteen".