165042163 has 16 divisors (see below), whose sum is σ = 199142496. Its totient is φ = 134749440.

The previous prime is 165042133. The next prime is 165042187. The reversal of 165042163 is 361240561.

It is a cyclic number.

It is not a de Polignac number, because 165042163 - 2⁹ = 165041651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165042133) 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, 10306 + ... + 20887.

It is an arithmetic number, because the mean of its divisors is an integer number (12446406).

Almost surely, 2^165042163 is an apocalyptic number.

165042163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

165042163 is a deficient number, since it is larger than the sum of its proper divisors (34100333).

165042163 is a wasteful number, since it uses less digits than its factorization.

165042163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31254.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 165042163 is about 12846.8736663828. The cubic root of 165042163 is about 548.5273696278.

The spelling of 165042163 in words is "one hundred sixty-five million, forty-two thousand, one hundred sixty-three".