199458136 has 8 divisors (see below), whose sum is σ = 373984020. Its totient is φ = 99729064.

The previous prime is 199458121. The next prime is 199458137. The reversal of 199458136 is 631854991.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199458137) 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 as a sum of consecutive naturals, namely, 12466126 + ... + 12466141.

Almost surely, 2^199458136 is an apocalyptic number.

It is an amenable number.

199458136 is a deficient number, since it is larger than the sum of its proper divisors (174525884).

199458136 is a wasteful number, since it uses less digits than its factorization.

199458136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24932273 (or 24932269 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The square root of 199458136 is about 14122.9648445360. The cubic root of 199458136 is about 584.2749299740.

The spelling of 199458136 in words is "one hundred ninety-nine million, four hundred fifty-eight thousand, one hundred thirty-six".