196991233 has 4 divisors (see below), whose sum is σ = 197023680. Its totient is φ = 196958788.

The previous prime is 196991227. The next prime is 196991239. The reversal of 196991233 is 332199691.

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 an interprime number because it is at equal distance from previous prime (196991227) and next prime (196991239).

It is a cyclic number.

It is not a de Polignac number, because 196991233 - 2⁹ = 196990721 is a prime.

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 196991233.

It is not an unprimeable number, because it can be changed into a prime (196991239) 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, 4093 + ... + 20266.

It is an arithmetic number, because the mean of its divisors is an integer number (49255920).

Almost surely, 2^196991233 is an apocalyptic number.

It is an amenable number.

196991233 is a deficient number, since it is larger than the sum of its proper divisors (32447).

196991233 is an equidigital number, since it uses as much as digits as its factorization.

196991233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32446.

The product of its digits is 78732, while the sum is 43.

The square root of 196991233 is about 14035.3565326998. The cubic root of 196991233 is about 581.8561551350.

The spelling of 196991233 in words is "one hundred ninety-six million, nine hundred ninety-one thousand, two hundred thirty-three".