199112918 has 8 divisors (see below), whose sum is σ = 298777248. Its totient is φ = 99520504.

The previous prime is 199112917. The next prime is 199112929. The reversal of 199112918 is 819211991.

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

It is a super-2 number, since 2×199112918² = 79291908228949448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199112917) by changing a digit.

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, 10421 + ... + 22512.

It is an arithmetic number, because the mean of its divisors is an integer number (37347156).

Almost surely, 2^199112918 is an apocalyptic number.

199112918 is a deficient number, since it is larger than the sum of its proper divisors (99664330).

199112918 is a wasteful number, since it uses less digits than its factorization.

199112918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35958.

The product of its digits is 11664, while the sum is 41.

The square root of 199112918 is about 14110.7376844728. The cubic root of 199112918 is about 583.9376516756.

The spelling of 199112918 in words is "one hundred ninety-nine million, one hundred twelve thousand, nine hundred eighteen".