165648011 has 2 divisors, whose sum is σ = 165648012. Its totient is φ = 165648010.

The previous prime is 165647959. The next prime is 165648013. The reversal of 165648011 is 110846561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165648011 - 2¹⁸ = 165385867 is a prime.

It is a super-2 number, since 2×165648011² = 54878527096512242, which contains 22 as substring.

Together with 165648013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165648013) 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, 82824005 + 82824006.

It is an arithmetic number, because the mean of its divisors is an integer number (82824006).

Almost surely, 2^165648011 is an apocalyptic number.

165648011 is a deficient number, since it is larger than the sum of its proper divisors (1).

165648011 is an equidigital number, since it uses as much as digits as its factorization.

165648011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 165648011 is about 12870.4316555429. The cubic root of 165648011 is about 549.1977405432.

The spelling of 165648011 in words is "one hundred sixty-five million, six hundred forty-eight thousand, eleven".