194670629 has 2 divisors, whose sum is σ = 194670630. Its totient is φ = 194670628.

The previous prime is 194670617. The next prime is 194670631. The reversal of 194670629 is 926076491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169650625 + 25020004 = 13025^2 + 5002^2 .

It is an emirp because it is prime and its reverse (926076491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194670629 - 2²⁰ = 193622053 is a prime.

Together with 194670631, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 194670629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194670659) 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, 97335314 + 97335315.

It is an arithmetic number, because the mean of its divisors is an integer number (97335315).

Almost surely, 2^194670629 is an apocalyptic number.

It is an amenable number.

194670629 is a deficient number, since it is larger than the sum of its proper divisors (1).

194670629 is an equidigital number, since it uses as much as digits as its factorization.

194670629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 194670629 is about 13952.4416859559. The cubic root of 194670629 is about 579.5623224004.

The spelling of 194670629 in words is "one hundred ninety-four million, six hundred seventy thousand, six hundred twenty-nine".