196969800675649 has 9 divisors (see below), whose sum is σ = 197095420149897. Its totient is φ = 196844261241264.

The previous prime is 196969800675647. The next prime is 196969800675673. The reversal of 196969800675649 is 946576008969691.

It is a happy number.

The square root of 196969800675649 is 14034593.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 110405980130625 + 86563820545024 = 10507425^2 + 9303968^2 .

It is not a de Polignac number, because 196969800675649 - 2¹ = 196969800675647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196969800675647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 28476185739 + ... + 28476192655.

Almost surely, 2^{196969800675649} is an apocalyptic number.

196969800675649 is the 14034593-rd square number.

196969800675649 is the 7017297-th centered octagonal number.

It is an amenable number.

196969800675649 is a deficient number, since it is larger than the sum of its proper divisors (125619474248).

196969800675649 is an frugal number, since it uses more digits than its factorization.

196969800675649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17892 (or 8946 counting only the distinct ones).

The product of its (nonzero) digits is 9523422720, while the sum is 85.

The spelling of 196969800675649 in words is "one hundred ninety-six trillion, nine hundred sixty-nine billion, eight hundred million, six hundred seventy-five thousand, six hundred forty-nine".