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166349 is a prime number
BaseRepresentation
bin101000100111001101
322110012002
4220213031
520310344
63322045
71261661
oct504715
9273162
10166349
11103a87
1280325
135a941
14448a1
153444e
hex289cd

166349 has 2 divisors, whose sum is σ = 166350. Its totient is φ = 166348.

The previous prime is 166319. The next prime is 166351. The reversal of 166349 is 943661.

166349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133225 + 33124 = 365^2 + 182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-166349 is a prime.

It is a Sophie Germain prime.

Together with 166351, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 15 and base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83174 + 83175.

It is an arithmetic number, because the mean of its divisors is an integer number (83175).

2166349 is an apocalyptic number.

It is an amenable number.

166349 is a deficient number, since it is larger than the sum of its proper divisors (1).

166349 is an equidigital number, since it uses as much as digits as its factorization.

166349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 166349 is about 407.8590442788. The cubic root of 166349 is about 54.9971348370.

It can be divided in two parts, 166 and 349, that added together give a palindrome (515).

The spelling of 166349 in words is "one hundred sixty-six thousand, three hundred forty-nine".