194134169 has 4 divisors (see below), whose sum is σ = 205553844. Its totient is φ = 182714496.

The previous prime is 194134097. The next prime is 194134201. The reversal of 194134169 is 961431491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 961431491 = 59 ⋅16295449.

It can be written as a sum of positive squares in 2 ways, for example, as 159087769 + 35046400 = 12613^2 + 5920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194134169 is a prime.

It is a super-2 number, since 2×194134169² = 75376151146641122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194134469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5709812 + ... + 5709845.

It is an arithmetic number, because the mean of its divisors is an integer number (51388461).

Almost surely, 2^194134169 is an apocalyptic number.

It is an amenable number.

194134169 is a deficient number, since it is larger than the sum of its proper divisors (11419675).

194134169 is a wasteful number, since it uses less digits than its factorization.

194134169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11419674.

The product of its digits is 23328, while the sum is 38.

The square root of 194134169 is about 13933.2038311366. The cubic root of 194134169 is about 579.0294598935.

The spelling of 194134169 in words is "one hundred ninety-four million, one hundred thirty-four thousand, one hundred sixty-nine".