196393787 has 2 divisors, whose sum is σ = 196393788. Its totient is φ = 196393786.

The previous prime is 196393783. The next prime is 196393801. The reversal of 196393787 is 787393691.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196393787 - 2² = 196393783 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (196393781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98196893 + 98196894.

It is an arithmetic number, because the mean of its divisors is an integer number (98196894).

Almost surely, 2^196393787 is an apocalyptic number.

196393787 is a deficient number, since it is larger than the sum of its proper divisors (1).

196393787 is an equidigital number, since it uses as much as digits as its factorization.

196393787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 53.

The square root of 196393787 is about 14014.0567645489. The cubic root of 196393787 is about 581.2673308587.

The spelling of 196393787 in words is "one hundred ninety-six million, three hundred ninety-three thousand, seven hundred eighty-seven".