196843255397 has 4 divisors (see below), whose sum is σ = 196873587456. Its totient is φ = 196812923340.

The previous prime is 196843255381. The next prime is 196843255439. The reversal of 196843255397 is 793552348691.

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 a cyclic number.

It is not a de Polignac number, because 196843255397 - 2⁴ = 196843255381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196843255337) 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, 15156293 + ... + 15169274.

It is an arithmetic number, because the mean of its divisors is an integer number (49218396864).

Almost surely, 2^196843255397 is an apocalyptic number.

It is an amenable number.

196843255397 is a deficient number, since it is larger than the sum of its proper divisors (30332059).

196843255397 is an equidigital number, since it uses as much as digits as its factorization.

196843255397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30332058.

The product of its digits is 48988800, while the sum is 62.

The spelling of 196843255397 in words is "one hundred ninety-six billion, eight hundred forty-three million, two hundred fifty-five thousand, three hundred ninety-seven".