165486845 has 4 divisors (see below), whose sum is σ = 198584220. Its totient is φ = 132389472.

The previous prime is 165486803. The next prime is 165486869. The reversal of 165486845 is 548684561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 548684561 = 1069 ⋅513269.

It can be written as a sum of positive squares in 2 ways, for example, as 123054649 + 42432196 = 11093^2 + 6514^2 .

It is a cyclic number.

It is not a de Polignac number, because 165486845 - 2⁶ = 165486781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165486845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16548680 + ... + 16548689.

It is an arithmetic number, because the mean of its divisors is an integer number (49646055).

Almost surely, 2^165486845 is an apocalyptic number.

It is an amenable number.

165486845 is a deficient number, since it is larger than the sum of its proper divisors (33097375).

165486845 is an equidigital number, since it uses as much as digits as its factorization.

165486845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33097374.

The product of its digits is 921600, while the sum is 47.

The square root of 165486845 is about 12864.1690365138. The cubic root of 165486845 is about 549.0195701288.

The spelling of 165486845 in words is "one hundred sixty-five million, four hundred eighty-six thousand, eight hundred forty-five".