194492293 has 2 divisors, whose sum is σ = 194492294. Its totient is φ = 194492292.

The previous prime is 194492279. The next prime is 194492371. The reversal of 194492293 is 392294491.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192848769 + 1643524 = 13887^2 + 1282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194492293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194492213) 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 as a sum of consecutive naturals, namely, 97246146 + 97246147.

It is an arithmetic number, because the mean of its divisors is an integer number (97246147).

Almost surely, 2^194492293 is an apocalyptic number.

It is an amenable number.

194492293 is a deficient number, since it is larger than the sum of its proper divisors (1).

194492293 is an equidigital number, since it uses as much as digits as its factorization.

194492293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The square root of 194492293 is about 13946.0493689073. The cubic root of 194492293 is about 579.3852910658.

The spelling of 194492293 in words is "one hundred ninety-four million, four hundred ninety-two thousand, two hundred ninety-three".