165364613 has 2 divisors, whose sum is σ = 165364614. Its totient is φ = 165364612.

The previous prime is 165364579. The next prime is 165364631. The reversal of 165364613 is 316463561.

165364613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (165364631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150749284 + 14615329 = 12278^2 + 3823^2 .

It is a cyclic number.

It is not a de Polignac number, because 165364613 - 2¹⁴ = 165348229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165364673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82682306 + 82682307.

It is an arithmetic number, because the mean of its divisors is an integer number (82682307).

Almost surely, 2^165364613 is an apocalyptic number.

It is an amenable number.

165364613 is a deficient number, since it is larger than the sum of its proper divisors (1).

165364613 is an equidigital number, since it uses as much as digits as its factorization.

165364613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 165364613 is about 12859.4172885088. The cubic root of 165364613 is about 548.8843644387.

It can be divided in two parts, 1653 and 64613, that added together give a palindrome (66266).

The spelling of 165364613 in words is "one hundred sixty-five million, three hundred sixty-four thousand, six hundred thirteen".