196820913 has 32 divisors (see below), whose sum is σ = 282341376. Its totient is φ = 121666688.

The previous prime is 196820909. The next prime is 196820929. The reversal of 196820913 is 319028691.

It is not a de Polignac number, because 196820913 - 2² = 196820909 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (196820903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 444070 + ... + 444512.

It is an arithmetic number, because the mean of its divisors is an integer number (8823168).

Almost surely, 2^196820913 is an apocalyptic number.

It is an amenable number.

196820913 is a deficient number, since it is larger than the sum of its proper divisors (85520463).

196820913 is a wasteful number, since it uses less digits than its factorization.

196820913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 196820913 is about 14029.2876868357. The cubic root of 196820913 is about 581.6884144799.

The spelling of 196820913 in words is "one hundred ninety-six million, eight hundred twenty thousand, nine hundred thirteen".