199118738 has 16 divisors (see below), whose sum is σ = 367604160. Its totient is φ = 78772176.

The previous prime is 199118737. The next prime is 199118741. The reversal of 199118738 is 837811991.

199118738 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 199118692 and 199118701.

It is not an unprimeable number, because it can be changed into a prime (199118737) 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 7 ways as a sum of consecutive naturals, for example, 546848 + ... + 547211.

It is an arithmetic number, because the mean of its divisors is an integer number (22975260).

Almost surely, 2^199118738 is an apocalyptic number.

199118738 is a deficient number, since it is larger than the sum of its proper divisors (168485422).

199118738 is a wasteful number, since it uses less digits than its factorization.

199118738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094081.

The product of its digits is 108864, while the sum is 47.

The square root of 199118738 is about 14110.9439088957. The cubic root of 199118738 is about 583.9433410504.

The spelling of 199118738 in words is "one hundred ninety-nine million, one hundred eighteen thousand, seven hundred thirty-eight".