165580149 has 16 divisors (see below), whose sum is σ = 252495360. Its totient is φ = 94548720.

The previous prime is 165580147. The next prime is 165580157. The reversal of 165580149 is 941085561.

It is not a de Polignac number, because 165580149 - 2¹ = 165580147 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165580147) 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 in 15 ways as a sum of consecutive naturals, for example, 47434 + ... + 50804.

It is an arithmetic number, because the mean of its divisors is an integer number (15780960).

Almost surely, 2^165580149 is an apocalyptic number.

It is an amenable number.

165580149 is a deficient number, since it is larger than the sum of its proper divisors (86915211).

165580149 is a wasteful number, since it uses less digits than its factorization.

165580149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5720.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 165580149 is about 12867.7950325609. The cubic root of 165580149 is about 549.1227326042.

The spelling of 165580149 in words is "one hundred sixty-five million, five hundred eighty thousand, one hundred forty-nine".