165616103 has 8 divisors (see below), whose sum is σ = 174807600. Its totient is φ = 156472128.

The previous prime is 165616081. The next prime is 165616147. The reversal of 165616103 is 301616561.

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

It is a cyclic number.

It is not a de Polignac number, because 165616103 - 2⁶ = 165616039 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165616163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4598 + ... + 18771.

It is an arithmetic number, because the mean of its divisors is an integer number (21850950).

Almost surely, 2^165616103 is an apocalyptic number.

165616103 is a deficient number, since it is larger than the sum of its proper divisors (9191497).

165616103 is a wasteful number, since it uses less digits than its factorization.

165616103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23761.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 165616103 is about 12869.1920103789. The cubic root of 165616103 is about 549.1624751498.

The spelling of 165616103 in words is "one hundred sixty-five million, six hundred sixteen thousand, one hundred three".