199201962689 has 4 divisors (see below), whose sum is σ = 199228358100. Its totient is φ = 199175567280.

The previous prime is 199201962679. The next prime is 199201962763. The reversal of 199201962689 is 986269102991.

199201962689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 138222599089 + 60979363600 = 371783^2 + 246940^2 .

It is a cyclic number.

It is not a de Polignac number, because 199201962689 - 2²⁰ = 199200914113 is a prime.

It is a super-2 number, since 2×199201962689² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199201962679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13186382 + ... + 13201479.

It is an arithmetic number, because the mean of its divisors is an integer number (49807089525).

Almost surely, 2^199201962689 is an apocalyptic number.

It is an amenable number.

199201962689 is a deficient number, since it is larger than the sum of its proper divisors (26395411).

199201962689 is an equidigital number, since it uses as much as digits as its factorization.

199201962689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26395410.

The product of its (nonzero) digits is 7558272, while the sum is 62.

The spelling of 199201962689 in words is "one hundred ninety-nine billion, two hundred one million, nine hundred sixty-two thousand, six hundred eighty-nine".