165360365 has 4 divisors (see below), whose sum is σ = 198432444. Its totient is φ = 132288288.

The previous prime is 165360361. The next prime is 165360367. The reversal of 165360365 is 563063561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 563063561 = 137 ⋅4109953.

It can be written as a sum of positive squares in 2 ways, for example, as 68790436 + 96569929 = 8294^2 + 9827^2 .

It is a cyclic number.

It is not a de Polignac number, because 165360365 - 2² = 165360361 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165360361) 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 in 3 ways as a sum of consecutive naturals, for example, 16536032 + ... + 16536041.

It is an arithmetic number, because the mean of its divisors is an integer number (49608111).

Almost surely, 2^165360365 is an apocalyptic number.

It is an amenable number.

165360365 is a deficient number, since it is larger than the sum of its proper divisors (33072079).

165360365 is an equidigital number, since it uses as much as digits as its factorization.

165360365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33072078.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 165360365 is about 12859.2521166668. The cubic root of 165360365 is about 548.8796643587.

The spelling of 165360365 in words is "one hundred sixty-five million, three hundred sixty thousand, three hundred sixty-five".