199550016 has 42 divisors (see below), whose sum is σ = 571975742. Its totient is φ = 66516480.

The previous prime is 199550009. The next prime is 199550017. The reversal of 199550016 is 610055991.

199550016 is a `hidden beast` number, since 1 + 99 + 550 + 0 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 177422400 + 22127616 = 13320^2 + 4704^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (199550017) 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, 172645 + ... + 173796.

Almost surely, 2^199550016 is an apocalyptic number.

199550016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

199550016 is an abundant number, since it is smaller than the sum of its proper divisors (372425726).

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

199550016 is a wasteful number, since it uses less digits than its factorization.

199550016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346459 (or 346446 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The square root of 199550016 is about 14126.2173280748. The cubic root of 199550016 is about 584.3646312362.

The spelling of 199550016 in words is "one hundred ninety-nine million, five hundred fifty thousand, sixteen".