196798243 has 4 divisors (see below), whose sum is σ = 199289440. Its totient is φ = 194307048.

The previous prime is 196798241. The next prime is 196798253. The reversal of 196798243 is 342897691.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 196798243 - 2¹ = 196798241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196798241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1245480 + ... + 1245637.

It is an arithmetic number, because the mean of its divisors is an integer number (49822360).

Almost surely, 2^196798243 is an apocalyptic number.

196798243 is a deficient number, since it is larger than the sum of its proper divisors (2491197).

196798243 is an equidigital number, since it uses as much as digits as its factorization.

196798243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491196.

The product of its digits is 653184, while the sum is 49.

The square root of 196798243 is about 14028.4797109309. The cubic root of 196798243 is about 581.6660805005. Note that the first 3 decimals are identical.

The spelling of 196798243 in words is "one hundred ninety-six million, seven hundred ninety-eight thousand, two hundred forty-three".