194492543 has 16 divisors (see below), whose sum is σ = 230461440. Its totient is φ = 160617600.

The previous prime is 194492539. The next prime is 194492581. The reversal of 194492543 is 345294491.

It is a cyclic number.

It is not a de Polignac number, because 194492543 - 2² = 194492539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 194492543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194492743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50438 + ... + 54156.

It is an arithmetic number, because the mean of its divisors is an integer number (14403840).

Almost surely, 2^194492543 is an apocalyptic number.

194492543 is a deficient number, since it is larger than the sum of its proper divisors (35968897).

194492543 is a wasteful number, since it uses less digits than its factorization.

194492543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998.

The product of its digits is 155520, while the sum is 41.

The square root of 194492543 is about 13946.0583320163. The cubic root of 194492543 is about 579.3855393126.

The spelling of 194492543 in words is "one hundred ninety-four million, four hundred ninety-two thousand, five hundred forty-three".