196489237209 has 16 divisors (see below), whose sum is σ = 264573000000. Its totient is φ = 129705126336.

The previous prime is 196489237169. The next prime is 196489237213. The reversal of 196489237209 is 902732984691.

It is not a de Polignac number, because 196489237209 - 2²⁵ = 196455682777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196489237309) 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, 615334 + ... + 878415.

It is an arithmetic number, because the mean of its divisors is an integer number (16535812500).

Almost surely, 2^196489237209 is an apocalyptic number.

It is an amenable number.

196489237209 is a deficient number, since it is larger than the sum of its proper divisors (68083762791).

196489237209 is a wasteful number, since it uses less digits than its factorization.

196489237209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494184.

The product of its (nonzero) digits is 11757312, while the sum is 60.

The spelling of 196489237209 in words is "one hundred ninety-six billion, four hundred eighty-nine million, two hundred thirty-seven thousand, two hundred nine".