194120491 has 4 divisors (see below), whose sum is σ = 194604984. Its totient is φ = 193636000.

The previous prime is 194120489. The next prime is 194120579. The reversal of 194120491 is 194021491.

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 194120491 - 2¹ = 194120489 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194120401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241645 + ... + 242446.

It is an arithmetic number, because the mean of its divisors is an integer number (48651246).

Almost surely, 2^194120491 is an apocalyptic number.

194120491 is a deficient number, since it is larger than the sum of its proper divisors (484493).

194120491 is an equidigital number, since it uses as much as digits as its factorization.

194120491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484492.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 194120491 is about 13932.7129806079. The cubic root of 194120491 is about 579.0158607917.

The spelling of 194120491 in words is "one hundred ninety-four million, one hundred twenty thousand, four hundred ninety-one".