165187063 has 2 divisors, whose sum is σ = 165187064. Its totient is φ = 165187062.

The previous prime is 165187051. The next prime is 165187069. The reversal of 165187063 is 360781561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165187063 - 2⁵ = 165187031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165187069) 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, 82593531 + 82593532.

It is an arithmetic number, because the mean of its divisors is an integer number (82593532).

Almost surely, 2^165187063 is an apocalyptic number.

165187063 is a deficient number, since it is larger than the sum of its proper divisors (1).

165187063 is an equidigital number, since it uses as much as digits as its factorization.

165187063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 165187063 is about 12852.5119334704. The cubic root of 165187063 is about 548.6878505725.

The spelling of 165187063 in words is "one hundred sixty-five million, one hundred eighty-seven thousand, sixty-three".