194869313 has 2 divisors, whose sum is σ = 194869314. Its totient is φ = 194869312.

The previous prime is 194869307. The next prime is 194869321. The reversal of 194869313 is 313968491.

194869313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180821809 + 14047504 = 13447^2 + 3748^2 .

It is an emirp because it is prime and its reverse (313968491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194869313 - 2⁸ = 194869057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (194869333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97434656 + 97434657.

It is an arithmetic number, because the mean of its divisors is an integer number (97434657).

Almost surely, 2^194869313 is an apocalyptic number.

It is an amenable number.

194869313 is a deficient number, since it is larger than the sum of its proper divisors (1).

194869313 is an equidigital number, since it uses as much as digits as its factorization.

194869313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 194869313 is about 13959.5599142666. The cubic root of 194869313 is about 579.7594255941.

The spelling of 194869313 in words is "one hundred ninety-four million, eight hundred sixty-nine thousand, three hundred thirteen".