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194164841 = 1314935757
BaseRepresentation
bin10111001001010…
…11100001101001
3111112100121002102
423210223201221
5344201233331
631133343145
74545242153
oct1344534151
9445317072
10194164841
119a667a12
1255037ab5
13312c3350
141bb03ad3
15120a54cb
hexb92b869

194164841 has 4 divisors (see below), whose sum is σ = 209100612. Its totient is φ = 179229072.

The previous prime is 194164813. The next prime is 194164843. The reversal of 194164841 is 148461491.

194164841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 148461491 = 923916069.

It can be written as a sum of positive squares in 2 ways, for example, as 17673616 + 176491225 = 4204^2 + 13285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-194164841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 194164795 and 194164804.

It is not an unprimeable number, because it can be changed into a prime (194164843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7467866 + ... + 7467891.

It is an arithmetic number, because the mean of its divisors is an integer number (52275153).

Almost surely, 2194164841 is an apocalyptic number.

It is an amenable number.

194164841 is a deficient number, since it is larger than the sum of its proper divisors (14935771).

194164841 is a wasteful number, since it uses less digits than its factorization.

194164841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14935770.

The product of its digits is 27648, while the sum is 38.

The square root of 194164841 is about 13934.3044677515. The cubic root of 194164841 is about 579.0599526474.

The spelling of 194164841 in words is "one hundred ninety-four million, one hundred sixty-four thousand, eight hundred forty-one".

Divisors: 1 13 14935757 194164841