196698469865 has 4 divisors (see below), whose sum is σ = 236038163844. Its totient is φ = 157358775888.

The previous prime is 196698469843. The next prime is 196698469867. The reversal of 196698469865 is 568964896691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 568964896691 = 137 ⋅4153028443.

It can be written as a sum of positive squares in 2 ways, for example, as 70767172441 + 125931297424 = 266021^2 + 354868^2 .

It is a cyclic number.

It is not a de Polignac number, because 196698469865 - 2¹⁴ = 196698453481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (196698469867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19669846982 + ... + 19669846991.

It is an arithmetic number, because the mean of its divisors is an integer number (59009540961).

Almost surely, 2^196698469865 is an apocalyptic number.

It is an amenable number.

196698469865 is a deficient number, since it is larger than the sum of its proper divisors (39339693979).

196698469865 is an equidigital number, since it uses as much as digits as its factorization.

196698469865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39339693978.

The product of its digits is 1209323520, while the sum is 77.

The spelling of 196698469865 in words is "one hundred ninety-six billion, six hundred ninety-eight million, four hundred sixty-nine thousand, eight hundred sixty-five".