165539845 has 8 divisors (see below), whose sum is σ = 205056000. Its totient is φ = 128159760.

The previous prime is 165539833. The next prime is 165539851. The reversal of 165539845 is 548935561.

165539845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165539845 - 2¹¹ = 165537797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165539795 and 165539804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533845 + ... + 534154.

It is an arithmetic number, because the mean of its divisors is an integer number (25632000).

Almost surely, 2^165539845 is an apocalyptic number.

It is an amenable number.

165539845 is a deficient number, since it is larger than the sum of its proper divisors (39516155).

165539845 is a wasteful number, since it uses less digits than its factorization.

165539845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068035.

The product of its digits is 648000, while the sum is 46.

The square root of 165539845 is about 12866.2288569728. The cubic root of 165539845 is about 549.0781748503.

The spelling of 165539845 in words is "one hundred sixty-five million, five hundred thirty-nine thousand, eight hundred forty-five".