196009791 has 8 divisors (see below), whose sum is σ = 263934384. Its totient is φ = 129379200.

The previous prime is 196009789. The next prime is 196009817. The reversal of 196009791 is 197900691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 196009791 - 2¹ = 196009789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196009291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323146 + ... + 323751.

It is an arithmetic number, because the mean of its divisors is an integer number (32991798).

Almost surely, 2^196009791 is an apocalyptic number.

196009791 is a deficient number, since it is larger than the sum of its proper divisors (67924593).

196009791 is a wasteful number, since it uses less digits than its factorization.

196009791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647001.

The product of its (nonzero) digits is 30618, while the sum is 42.

The square root of 196009791 is about 14000.3496742046. The cubic root of 196009791 is about 580.8882456139. Note that the first 3 decimals are identical.

The spelling of 196009791 in words is "one hundred ninety-six million, nine thousand, seven hundred ninety-one".