194610306469 has 2 divisors, whose sum is σ = 194610306470. Its totient is φ = 194610306468.

The previous prime is 194610306461. The next prime is 194610306533. The reversal of 194610306469 is 964603016491.

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., 174314600100 + 20295706369 = 417510^2 + 142463^2 .

It is an emirp because it is prime and its reverse (964603016491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194610306469 - 2³ = 194610306461 is a prime.

It is a super-2 number, since 2×194610306469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194610306461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97305153234 + 97305153235.

It is an arithmetic number, because the mean of its divisors is an integer number (97305153235).

Almost surely, 2^194610306469 is an apocalyptic number.

It is an amenable number.

194610306469 is a deficient number, since it is larger than the sum of its proper divisors (1).

194610306469 is an equidigital number, since it uses as much as digits as its factorization.

194610306469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 839808, while the sum is 49.

The spelling of 194610306469 in words is "one hundred ninety-four billion, six hundred ten million, three hundred six thousand, four hundred sixty-nine".