165314161 has 2 divisors, whose sum is σ = 165314162. Its totient is φ = 165314160.

The previous prime is 165314153. The next prime is 165314183. The reversal of 165314161 is 161413561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164224225 + 1089936 = 12815^2 + 1044^2 .

It is an emirp because it is prime and its reverse (161413561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165314161 - 2³ = 165314153 is a prime.

It is not a weakly prime, because it can be changed into another prime (165314131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82657080 + 82657081.

It is an arithmetic number, because the mean of its divisors is an integer number (82657081).

Almost surely, 2^165314161 is an apocalyptic number.

It is an amenable number.

165314161 is a deficient number, since it is larger than the sum of its proper divisors (1).

165314161 is an equidigital number, since it uses as much as digits as its factorization.

165314161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 165314161 is about 12857.4554636600. The cubic root of 165314161 is about 548.8285380435.

The spelling of 165314161 in words is "one hundred sixty-five million, three hundred fourteen thousand, one hundred sixty-one".