162114181 has 2 divisors, whose sum is σ = 162114182. Its totient is φ = 162114180.

The previous prime is 162114179. The next prime is 162114217. The reversal of 162114181 is 181411261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136773025 + 25341156 = 11695^2 + 5034^2 .

It is an emirp because it is prime and its reverse (181411261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162114181 - 2¹ = 162114179 is a prime.

It is a super-2 number, since 2×162114181² = 52562015362601522, which contains 22 as substring.

Together with 162114179, 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 (162114101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81057090 + 81057091.

It is an arithmetic number, because the mean of its divisors is an integer number (81057091).

Almost surely, 2^162114181 is an apocalyptic number.

It is an amenable number.

162114181 is a deficient number, since it is larger than the sum of its proper divisors (1).

162114181 is an equidigital number, since it uses as much as digits as its factorization.

162114181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 25.

The square root of 162114181 is about 12732.4067245749. The cubic root of 162114181 is about 545.2642222447.

The spelling of 162114181 in words is "one hundred sixty-two million, one hundred fourteen thousand, one hundred eighty-one".