199536689 has 16 divisors (see below), whose sum is σ = 229894080. Its totient is φ = 171279360.

The previous prime is 199536683. The next prime is 199536691. The reversal of 199536689 is 986635991.

It is a cyclic number.

It is not a de Polignac number, because 199536689 - 2⁸ = 199536433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199536683) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 69017 + ... + 71849.

It is an arithmetic number, because the mean of its divisors is an integer number (14368380).

Almost surely, 2^199536689 is an apocalyptic number.

199536689 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

199536689 is a deficient number, since it is larger than the sum of its proper divisors (30357391).

199536689 is a wasteful number, since it uses less digits than its factorization.

199536689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200.

The product of its digits is 3149280, while the sum is 56.

The square root of 199536689 is about 14125.7456086396. The cubic root of 199536689 is about 584.3516219651.

The spelling of 199536689 in words is "one hundred ninety-nine million, five hundred thirty-six thousand, six hundred eighty-nine".