196343402891 has 8 divisors (see below), whose sum is σ = 197673512400. Its totient is φ = 195013458592.

The previous prime is 196343402887. The next prime is 196343403013. The reversal of 196343402891 is 198204343691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 196343402891 - 2² = 196343402887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196343402191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3200381 + ... + 3261153.

It is an arithmetic number, because the mean of its divisors is an integer number (24709189050).

Almost surely, 2^196343402891 is an apocalyptic number.

196343402891 is a deficient number, since it is larger than the sum of its proper divisors (1330109509).

196343402891 is a wasteful number, since it uses less digits than its factorization.

196343402891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82605.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 196343402891 in words is "one hundred ninety-six billion, three hundred forty-three million, four hundred two thousand, eight hundred ninety-one".