194698069 has 2 divisors, whose sum is σ = 194698070. Its totient is φ = 194698068.

The previous prime is 194698067. The next prime is 194698177. The reversal of 194698069 is 960896491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188512900 + 6185169 = 13730^2 + 2487^2 .

It is a cyclic number.

It is not a de Polignac number, because 194698069 - 2¹ = 194698067 is a prime.

It is a super-2 number, since 2×194698069² = 75814676144657522, which contains 22 as substring.

Together with 194698067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194698061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97349034 + 97349035.

It is an arithmetic number, because the mean of its divisors is an integer number (97349035).

Almost surely, 2^194698069 is an apocalyptic number.

It is an amenable number.

194698069 is a deficient number, since it is larger than the sum of its proper divisors (1).

194698069 is an equidigital number, since it uses as much as digits as its factorization.

194698069 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 52.

The square root of 194698069 is about 13953.4249917359. The cubic root of 194698069 is about 579.5895520568.

The spelling of 194698069 in words is "one hundred ninety-four million, six hundred ninety-eight thousand, sixty-nine".