165545163 has 12 divisors (see below), whose sum is σ = 273281008. Its totient is φ = 94597200.

The previous prime is 165545123. The next prime is 165545203. The reversal of 165545163 is 361545561.

165545163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (165545123) and next prime (165545203).

It is not a de Polignac number, because 165545163 - 2¹⁰ = 165544139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165545123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1313788 + ... + 1313913.

Almost surely, 2^165545163 is an apocalyptic number.

165545163 is a deficient number, since it is larger than the sum of its proper divisors (107735845).

165545163 is a wasteful number, since it uses less digits than its factorization.

165545163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627714 (or 2627711 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 165545163 is about 12866.4355203763. The cubic root of 165545163 is about 549.0840545354.

The spelling of 165545163 in words is "one hundred sixty-five million, five hundred forty-five thousand, one hundred sixty-three".