134844181 has 2 divisors, whose sum is σ = 134844182. Its totient is φ = 134844180.

The previous prime is 134844179. The next prime is 134844209. The reversal of 134844181 is 181448431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113081956 + 21762225 = 10634^2 + 4665^2 .

It is an emirp because it is prime and its reverse (181448431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134844181 - 2¹ = 134844179 is a prime.

It is a super-2 number, since 2×134844181² = 36365906299121522, which contains 22 as substring.

Together with 134844179, 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 (134844581) 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 as a sum of consecutive naturals, namely, 67422090 + 67422091.

It is an arithmetic number, because the mean of its divisors is an integer number (67422091).

Almost surely, 2^134844181 is an apocalyptic number.

It is an amenable number.

134844181 is a deficient number, since it is larger than the sum of its proper divisors (1).

134844181 is an equidigital number, since it uses as much as digits as its factorization.

134844181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12288, while the sum is 34.

The square root of 134844181 is about 11612.2427205084. The cubic root of 134844181 is about 512.7953400622.

The spelling of 134844181 in words is "one hundred thirty-four million, eight hundred forty-four thousand, one hundred eighty-one".