194797793 has 2 divisors, whose sum is σ = 194797794. Its totient is φ = 194797792.

The previous prime is 194797789. The next prime is 194797829. The reversal of 194797793 is 397797491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187333969 + 7463824 = 13687^2 + 2732^2 .

It is a cyclic number.

It is not a de Polignac number, because 194797793 - 2² = 194797789 is a prime.

It is not a weakly prime, because it can be changed into another prime (194797703) 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 as a sum of consecutive naturals, namely, 97398896 + 97398897.

It is an arithmetic number, because the mean of its divisors is an integer number (97398897).

Almost surely, 2^194797793 is an apocalyptic number.

It is an amenable number.

194797793 is a deficient number, since it is larger than the sum of its proper divisors (1).

194797793 is an equidigital number, since it uses as much as digits as its factorization.

194797793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000564, while the sum is 56.

The square root of 194797793 is about 13956.9979938381. The cubic root of 194797793 is about 579.6884900747.

Adding to 194797793 its sum of digits (56), we get a square (194797849 = 13957²).

It can be divided in two parts, 19479 and 7793, that added together give a palindrome (27272).

The spelling of 194797793 in words is "one hundred ninety-four million, seven hundred ninety-seven thousand, seven hundred ninety-three".