165829613 has 2 divisors, whose sum is σ = 165829614. Its totient is φ = 165829612.

The previous prime is 165829561. The next prime is 165829649. The reversal of 165829613 is 316928561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89056969 + 76772644 = 9437^2 + 8762^2 .

It is a cyclic number.

It is not a de Polignac number, because 165829613 - 2¹⁴ = 165813229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165829673) 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, 82914806 + 82914807.

It is an arithmetic number, because the mean of its divisors is an integer number (82914807).

Almost surely, 2^165829613 is an apocalyptic number.

It is an amenable number.

165829613 is a deficient number, since it is larger than the sum of its proper divisors (1).

165829613 is an equidigital number, since it uses as much as digits as its factorization.

165829613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 165829613 is about 12877.4847311111. The cubic root of 165829613 is about 549.3983647113.

The spelling of 165829613 in words is "one hundred sixty-five million, eight hundred twenty-nine thousand, six hundred thirteen".