196685837 has 2 divisors, whose sum is σ = 196685838. Its totient is φ = 196685836.

The previous prime is 196685807. The next prime is 196685851. The reversal of 196685837 is 738586691.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194295721 + 2390116 = 13939^2 + 1546^2 .

It is a cyclic number.

It is not a de Polignac number, because 196685837 - 2⁶ = 196685773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196685807) 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 as a sum of consecutive naturals, namely, 98342918 + 98342919.

It is an arithmetic number, because the mean of its divisors is an integer number (98342919).

Almost surely, 2^196685837 is an apocalyptic number.

It is an amenable number.

196685837 is a deficient number, since it is larger than the sum of its proper divisors (1).

196685837 is an equidigital number, since it uses as much as digits as its factorization.

196685837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 53.

The square root of 196685837 is about 14024.4727886648. The cubic root of 196685837 is about 581.5553152675. Note that the first 3 decimals are identical.

The spelling of 196685837 in words is "one hundred ninety-six million, six hundred eighty-five thousand, eight hundred thirty-seven".