197690449763 has 2 divisors, whose sum is σ = 197690449764. Its totient is φ = 197690449762.

The previous prime is 197690449741. The next prime is 197690449787. The reversal of 197690449763 is 367944096791.

It is a weak prime.

It is an emirp because it is prime and its reverse (367944096791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197690449763 - 2¹⁴ = 197690433379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197690449763.

It is not a weakly prime, because it can be changed into another prime (197690449703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98845224881 + 98845224882.

It is an arithmetic number, because the mean of its divisors is an integer number (98845224882).

Almost surely, 2^197690449763 is an apocalyptic number.

197690449763 is a deficient number, since it is larger than the sum of its proper divisors (1).

197690449763 is an equidigital number, since it uses as much as digits as its factorization.

197690449763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61725888, while the sum is 65.

The spelling of 197690449763 in words is "one hundred ninety-seven billion, six hundred ninety million, four hundred forty-nine thousand, seven hundred sixty-three".