196055909 has 6 divisors (see below), whose sum is σ = 228065094. Its totient is φ = 168047880.

The previous prime is 196055903. The next prime is 196055929. The reversal of 196055909 is 909550691.

It can be written as a sum of positive squares in only one way, i.e., 142444225 + 53611684 = 11935^2 + 7322^2 .

It is not a de Polignac number, because 196055909 - 2⁸ = 196055653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 196055909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196055903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2000522 + ... + 2000619.

It is an arithmetic number, because the mean of its divisors is an integer number (38010849).

Almost surely, 2^196055909 is an apocalyptic number.

It is an amenable number.

196055909 is a deficient number, since it is larger than the sum of its proper divisors (32009185).

196055909 is an equidigital number, since it uses as much as digits as its factorization.

196055909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001155 (or 4001148 counting only the distinct ones).

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 196055909 is about 14001.9966076271. The cubic root of 196055909 is about 580.9337999766.

The spelling of 196055909 in words is "one hundred ninety-six million, fifty-five thousand, nine hundred nine".