199136646 has 12 divisors (see below), whose sum is σ = 431462772. Its totient is φ = 66378876.

The previous prime is 199136621. The next prime is 199136647. The reversal of 199136646 is 646631991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199136647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5531556 + ... + 5531591.

It is an arithmetic number, because the mean of its divisors is an integer number (35955231).

Almost surely, 2^199136646 is an apocalyptic number.

199136646 is an abundant number, since it is smaller than the sum of its proper divisors (232326126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199136646 is a wasteful number, since it uses less digits than its factorization.

199136646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11063155 (or 11063152 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 199136646 is about 14111.5784375810. The cubic root of 199136646 is about 583.9608464243.

The spelling of 199136646 in words is "one hundred ninety-nine million, one hundred thirty-six thousand, six hundred forty-six".