165319927 has 2 divisors, whose sum is σ = 165319928. Its totient is φ = 165319926.

The previous prime is 165319919. The next prime is 165319939. The reversal of 165319927 is 729913561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165319927 - 2³ = 165319919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165319967) 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, 82659963 + 82659964.

It is an arithmetic number, because the mean of its divisors is an integer number (82659964).

Almost surely, 2^165319927 is an apocalyptic number.

165319927 is a deficient number, since it is larger than the sum of its proper divisors (1).

165319927 is an equidigital number, since it uses as much as digits as its factorization.

165319927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 43.

The square root of 165319927 is about 12857.6796895863. The cubic root of 165319927 is about 548.8349188410.

The spelling of 165319927 in words is "one hundred sixty-five million, three hundred nineteen thousand, nine hundred twenty-seven".