165682613 has 2 divisors, whose sum is σ = 165682614. Its totient is φ = 165682612.

The previous prime is 165682609. The next prime is 165682651. The reversal of 165682613 is 316286561.

165682613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (165682651) can be obtained adding 165682613 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126720049 + 38962564 = 11257^2 + 6242^2 .

It is a cyclic number.

It is not a de Polignac number, because 165682613 - 2² = 165682609 is a prime.

It is equal to p_9274853 and since 165682613 and 9274853 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165612613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82841306 + 82841307.

It is an arithmetic number, because the mean of its divisors is an integer number (82841307).

Almost surely, 2^165682613 is an apocalyptic number.

It is an amenable number.

165682613 is a deficient number, since it is larger than the sum of its proper divisors (1).

165682613 is an equidigital number, since it uses as much as digits as its factorization.

165682613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 165682613 is about 12871.7758293096. The cubic root of 165682613 is about 549.2359782841.

The spelling of 165682613 in words is "one hundred sixty-five million, six hundred eighty-two thousand, six hundred thirteen".