165365005 has 16 divisors (see below), whose sum is σ = 220598784. Its totient is φ = 118175040.

The previous prime is 165365003. The next prime is 165365017. The reversal of 165365005 is 500563561.

165365005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165365005 - 2¹ = 165365003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165365003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39019 + ... + 43048.

It is an arithmetic number, because the mean of its divisors is an integer number (13787424).

Almost surely, 2^165365005 is an apocalyptic number.

It is an amenable number.

165365005 is a deficient number, since it is larger than the sum of its proper divisors (55233779).

165365005 is a wasteful number, since it uses less digits than its factorization.

165365005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82116.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 165365005 is about 12859.4325302480. The cubic root of 165365005 is about 548.8847981520.

The spelling of 165365005 in words is "one hundred sixty-five million, three hundred sixty-five thousand, five".