196236287689 has 16 divisors (see below), whose sum is σ = 219308458320. Its totient is φ = 174343115520.

The previous prime is 196236287659. The next prime is 196236287713. The reversal of 196236287689 is 986782632691.

It can be written as a sum of positive squares in 8 ways, for example, as 79303065664 + 116933222025 = 281608^2 + 341955^2 .

It is a cyclic number.

It is not a de Polignac number, because 196236287689 - 2¹³ = 196236279497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196236287609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 701502 + ... + 940519.

It is an arithmetic number, because the mean of its divisors is an integer number (13706778645).

Almost surely, 2^196236287689 is an apocalyptic number.

It is an amenable number.

196236287689 is a deficient number, since it is larger than the sum of its proper divisors (23072170631).

196236287689 is a wasteful number, since it uses less digits than its factorization.

196236287689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642380.

The product of its digits is 94058496, while the sum is 67.

The spelling of 196236287689 in words is "one hundred ninety-six billion, two hundred thirty-six million, two hundred eighty-seven thousand, six hundred eighty-nine".