165959011 has 2 divisors, whose sum is σ = 165959012. Its totient is φ = 165959010.

The previous prime is 165958999. The next prime is 165959029. The reversal of 165959011 is 110959561.

165959011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165959011 - 2¹⁹ = 165434723 is a prime.

It is not a weakly prime, because it can be changed into another prime (165959041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82979505 + 82979506.

It is an arithmetic number, because the mean of its divisors is an integer number (82979506).

Almost surely, 2^165959011 is an apocalyptic number.

165959011 is a deficient number, since it is larger than the sum of its proper divisors (1).

165959011 is an equidigital number, since it uses as much as digits as its factorization.

165959011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 37.

The square root of 165959011 is about 12882.5079468246. The cubic root of 165959011 is about 549.5412273468.

The spelling of 165959011 in words is "one hundred sixty-five million, nine hundred fifty-nine thousand, eleven".