196935808081 has 4 divisors (see below), whose sum is σ = 196941706164. Its totient is φ = 196929910000.

The previous prime is 196935808061. The next prime is 196935808103. The reversal of 196935808081 is 180808539691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180808539691 = 13 ⋅13908349207.

It can be written as a sum of positive squares in 2 ways, for example, as 28454291856 + 168481516225 = 168684^2 + 410465^2 .

It is a cyclic number.

It is not a de Polignac number, because 196935808081 - 2⁷ = 196935807953 is a prime.

It is a super-2 number, since 2×196935808081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196935808001) 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, 2898670 + ... + 2965831.

It is an arithmetic number, because the mean of its divisors is an integer number (49235426541).

Almost surely, 2^196935808081 is an apocalyptic number.

It is an amenable number.

196935808081 is a deficient number, since it is larger than the sum of its proper divisors (5898083).

196935808081 is an equidigital number, since it uses as much as digits as its factorization.

196935808081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5898082.

The product of its (nonzero) digits is 3732480, while the sum is 58.

The spelling of 196935808081 in words is "one hundred ninety-six billion, nine hundred thirty-five million, eight hundred eight thousand, eighty-one".