196111009 has 4 divisors (see below), whose sum is σ = 196149780. Its totient is φ = 196072240.

The previous prime is 196111007. The next prime is 196111033. The reversal of 196111009 is 900111691.

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 40360609 + 155750400 = 6353^2 + 12480^2 .

It is a cyclic number.

It is not a de Polignac number, because 196111009 - 2¹ = 196111007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196111007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10414 + ... + 22375.

It is an arithmetic number, because the mean of its divisors is an integer number (49037445).

Almost surely, 2^196111009 is an apocalyptic number.

It is an amenable number.

196111009 is a deficient number, since it is larger than the sum of its proper divisors (38771).

196111009 is an equidigital number, since it uses as much as digits as its factorization.

196111009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38770.

The product of its (nonzero) digits is 486, while the sum is 28.

The square root of 196111009 is about 14003.9640459407. The cubic root of 196111009 is about 580.9882171993.

The spelling of 196111009 in words is "one hundred ninety-six million, one hundred eleven thousand, nine".