194979113 has 4 divisors (see below), whose sum is σ = 222833280. Its totient is φ = 167124948.

The previous prime is 194979089. The next prime is 194979143. The reversal of 194979113 is 311979491.

It is a happy number.

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 194979113 - 2⁶ = 194979049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (194979143) 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, 13927073 + ... + 13927086.

It is an arithmetic number, because the mean of its divisors is an integer number (55708320).

Almost surely, 2^194979113 is an apocalyptic number.

It is an amenable number.

194979113 is a deficient number, since it is larger than the sum of its proper divisors (27854167).

194979113 is an equidigital number, since it uses as much as digits as its factorization.

194979113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27854166.

The product of its digits is 61236, while the sum is 44.

The square root of 194979113 is about 13963.4921491724. The cubic root of 194979113 is about 579.8682945102.

The spelling of 194979113 in words is "one hundred ninety-four million, nine hundred seventy-nine thousand, one hundred thirteen".