165122613 has 12 divisors (see below), whose sum is σ = 243011340. Its totient is φ = 108004416.

The previous prime is 165122611. The next prime is 165122663. The reversal of 165122613 is 316221561.

165122613 is a `hidden beast` number, since 1 + 651 + 2 + 2 + 6 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 146095569 + 19027044 = 12087^2 + 4362^2 .

It is not a de Polignac number, because 165122613 - 2¹ = 165122611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165122611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172608 + ... + 173561.

It is an arithmetic number, because the mean of its divisors is an integer number (20250945).

Almost surely, 2^165122613 is an apocalyptic number.

It is an amenable number.

165122613 is a deficient number, since it is larger than the sum of its proper divisors (77888727).

165122613 is a wasteful number, since it uses less digits than its factorization.

165122613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346228 (or 346225 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 165122613 is about 12850.0043968864. The cubic root of 165122613 is about 548.6164819245.

The spelling of 165122613 in words is "one hundred sixty-five million, one hundred twenty-two thousand, six hundred thirteen".