196808961 has 4 divisors (see below), whose sum is σ = 262411952. Its totient is φ = 131205972.

The previous prime is 196808951. The next prime is 196808977. The reversal of 196808961 is 169808691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 196808961 - 2⁵ = 196808929 is a prime.

196808961 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 196808961.

It is not an unprimeable number, because it can be changed into a prime (196808951) 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, 32801491 + ... + 32801496.

It is an arithmetic number, because the mean of its divisors is an integer number (65602988).

Almost surely, 2^196808961 is an apocalyptic number.

It is an amenable number.

196808961 is a deficient number, since it is larger than the sum of its proper divisors (65602991).

196808961 is an equidigital number, since it uses as much as digits as its factorization.

196808961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65602990.

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 196808961 is about 14028.8617143373. The cubic root of 196808961 is about 581.6766398493.

The spelling of 196808961 in words is "one hundred ninety-six million, eight hundred eight thousand, nine hundred sixty-one".