196855123 has 4 divisors (see below), whose sum is σ = 199347040. Its totient is φ = 194363208.

The previous prime is 196855049. The next prime is 196855201. The reversal of 196855123 is 321558691.

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 196855123 - 2²¹ = 194757971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196855423) 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, 1245840 + ... + 1245997.

It is an arithmetic number, because the mean of its divisors is an integer number (49836760).

Almost surely, 2^196855123 is an apocalyptic number.

196855123 is a deficient number, since it is larger than the sum of its proper divisors (2491917).

196855123 is an equidigital number, since it uses as much as digits as its factorization.

196855123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491916.

The product of its digits is 64800, while the sum is 40.

The square root of 196855123 is about 14030.5068689624. The cubic root of 196855123 is about 581.7221141641.

The spelling of 196855123 in words is "one hundred ninety-six million, eight hundred fifty-five thousand, one hundred twenty-three".