199545650 has 12 divisors (see below), whose sum is σ = 371155002. Its totient is φ = 79818240.

The previous prime is 199545649. The next prime is 199545653. The reversal of 199545650 is 56545991.

It can be written as a sum of positive squares in 3 ways, for example, as 130804969 + 68740681 = 11437^2 + 8291^2 .

It is not an unprimeable number, because it can be changed into a prime (199545653) 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, 1995407 + ... + 1995506.

Almost surely, 2^199545650 is an apocalyptic number.

199545650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199545650 is a deficient number, since it is larger than the sum of its proper divisors (171609352).

199545650 is a wasteful number, since it uses less digits than its factorization.

199545650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990925 (or 3990920 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 199545650 is about 14126.0627918752. The cubic root of 199545650 is about 584.3603693898.

The spelling of 199545650 in words is "one hundred ninety-nine million, five hundred forty-five thousand, six hundred fifty".