165613793 has 2 divisors, whose sum is σ = 165613794. Its totient is φ = 165613792.

The previous prime is 165613787. The next prime is 165613871. The reversal of 165613793 is 397316561.

165613793 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 can be written as a sum of positive squares in only one way, i.e., 143448529 + 22165264 = 11977^2 + 4708^2 .

It is a cyclic number.

It is not a de Polignac number, because 165613793 - 2⁶ = 165613729 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165613793.

It is not a weakly prime, because it can be changed into another prime (165613753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82806896 + 82806897.

It is an arithmetic number, because the mean of its divisors is an integer number (82806897).

Almost surely, 2^165613793 is an apocalyptic number.

It is an amenable number.

165613793 is a deficient number, since it is larger than the sum of its proper divisors (1).

165613793 is an equidigital number, since it uses as much as digits as its factorization.

165613793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 41.

The square root of 165613793 is about 12869.1022608417. The cubic root of 165613793 is about 549.1599219134.

The spelling of 165613793 in words is "one hundred sixty-five million, six hundred thirteen thousand, seven hundred ninety-three".