194168717461 has 2 divisors, whose sum is σ = 194168717462. Its totient is φ = 194168717460.

The previous prime is 194168717441. The next prime is 194168717543. The reversal of 194168717461 is 164717861491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146248880625 + 47919836836 = 382425^2 + 218906^2 .

It is a cyclic number.

It is not a de Polignac number, because 194168717461 - 2¹¹ = 194168715413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194168717441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97084358730 + 97084358731.

It is an arithmetic number, because the mean of its divisors is an integer number (97084358731).

Almost surely, 2^194168717461 is an apocalyptic number.

It is an amenable number.

194168717461 is a deficient number, since it is larger than the sum of its proper divisors (1).

194168717461 is an equidigital number, since it uses as much as digits as its factorization.

194168717461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 55.

The spelling of 194168717461 in words is "one hundred ninety-four billion, one hundred sixty-eight million, seven hundred seventeen thousand, four hundred sixty-one".