194658207313 has 2 divisors, whose sum is σ = 194658207314. Its totient is φ = 194658207312.

The previous prime is 194658207307. The next prime is 194658207343. The reversal of 194658207313 is 313702856491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132927326464 + 61730880849 = 364592^2 + 248457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194658207313 is a prime.

It is not a weakly prime, because it can be changed into another prime (194658207343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97329103656 + 97329103657.

It is an arithmetic number, because the mean of its divisors is an integer number (97329103657).

It is a 1-persistent number, because it is pandigital, but 2⋅194658207313 = 389316414626 is not.

Almost surely, 2^194658207313 is an apocalyptic number.

It is an amenable number.

194658207313 is a deficient number, since it is larger than the sum of its proper divisors (1).

194658207313 is an equidigital number, since it uses as much as digits as its factorization.

194658207313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 194658207313 in words is "one hundred ninety-four billion, six hundred fifty-eight million, two hundred seven thousand, three hundred thirteen".