199616361 has 8 divisors (see below), whose sum is σ = 304177344. Its totient is φ = 114066480.

The previous prime is 199616353. The next prime is 199616399. The reversal of 199616361 is 163616991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199616361 - 2³ = 199616353 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199616321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4752750 + ... + 4752791.

It is an arithmetic number, because the mean of its divisors is an integer number (38022168).

Almost surely, 2^199616361 is an apocalyptic number.

It is an amenable number.

199616361 is a deficient number, since it is larger than the sum of its proper divisors (104560983).

199616361 is an equidigital number, since it uses as much as digits as its factorization.

199616361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9505551.

The product of its digits is 52488, while the sum is 42.

The square root of 199616361 is about 14128.5654261146. The cubic root of 199616361 is about 584.4293858884.

The spelling of 199616361 in words is "one hundred ninety-nine million, six hundred sixteen thousand, three hundred sixty-one".