194116904569 has 27 divisors (see below), whose sum is σ = 228235215117. Its totient is φ = 164617401984.

The previous prime is 194116904537. The next prime is 194116904581. The reversal of 194116904569 is 965409611491.

The square root of 194116904569 is 440587.

It is a perfect power (a square), and thus also a powerful number.

194116904569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 159810456169 + 34306448400 = 399763^2 + 185220^2 .

It is not a de Polignac number, because 194116904569 - 2⁵ = 194116904537 is a prime.

It is a super-2 number, since 2×194116904569² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (194116904519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 348504039 + ... + 348504595.

Almost surely, 2^194116904569 is an apocalyptic number.

194116904569 is the 440587-th square number.

194116904569 is the 220294-th centered octagonal number.

It is an amenable number.

194116904569 is a deficient number, since it is larger than the sum of its proper divisors (34118310548).

194116904569 is an frugal number, since it uses more digits than its factorization.

194116904569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 194116904569 in words is "one hundred ninety-four billion, one hundred sixteen million, nine hundred four thousand, five hundred sixty-nine".