196140797 has 2 divisors, whose sum is σ = 196140798. Its totient is φ = 196140796.

The previous prime is 196140787. The next prime is 196140799. The reversal of 196140797 is 797041691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104632441 + 91508356 = 10229^2 + 9566^2 .

It is an emirp because it is prime and its reverse (797041691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196140797 - 2¹⁸ = 195878653 is a prime.

Together with 196140799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196140799) 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 as a sum of consecutive naturals, namely, 98070398 + 98070399.

It is an arithmetic number, because the mean of its divisors is an integer number (98070399).

Almost surely, 2^196140797 is an apocalyptic number.

It is an amenable number.

196140797 is a deficient number, since it is larger than the sum of its proper divisors (1).

196140797 is an equidigital number, since it uses as much as digits as its factorization.

196140797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 196140797 is about 14005.0275615580. The cubic root of 196140797 is about 581.0176318336.

The spelling of 196140797 in words is "one hundred ninety-six million, one hundred forty thousand, seven hundred ninety-seven".