199368334489 has 4 divisors (see below), whose sum is σ = 199594633140. Its totient is φ = 199142035840.

The previous prime is 199368334469. The next prime is 199368334531. The reversal of 199368334489 is 984433863991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 984433863991 = 569 ⋅1730112239.

It can be written as a sum of positive squares in 2 ways, for example, as 11474694400 + 187893640089 = 107120^2 + 433467^2 .

It is a cyclic number.

It is not a de Polignac number, because 199368334489 - 2¹⁵ = 199368301721 is a prime.

It is a super-2 number, since 2×199368334489² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199368334439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113148004 + ... + 113149765.

It is an arithmetic number, because the mean of its divisors is an integer number (49898658285).

Almost surely, 2^199368334489 is an apocalyptic number.

It is an amenable number.

199368334489 is a deficient number, since it is larger than the sum of its proper divisors (226298651).

199368334489 is an equidigital number, since it uses as much as digits as its factorization.

199368334489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226298650.

The product of its digits is 120932352, while the sum is 67.

The spelling of 199368334489 in words is "one hundred ninety-nine billion, three hundred sixty-eight million, three hundred thirty-four thousand, four hundred eighty-nine".