199516689 has 20 divisors (see below), whose sum is σ = 304980016. Its totient is φ = 129915576.

The previous prime is 199516679. The next prime is 199516703. The reversal of 199516689 is 986615991.

It is not a de Polignac number, because 199516689 - 2¹³ = 199508497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199516679) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25159 + ... + 32124.

Almost surely, 2^199516689 is an apocalyptic number.

It is an amenable number.

199516689 is a deficient number, since it is larger than the sum of its proper divisors (105463327).

199516689 is an equidigital number, since it uses as much as digits as its factorization.

199516689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57338 (or 57329 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 199516689 is about 14125.0376636666. The cubic root of 199516689 is about 584.3320976978.

The spelling of 199516689 in words is "one hundred ninety-nine million, five hundred sixteen thousand, six hundred eighty-nine".