18160165 has 8 divisors (see below), whose sum is σ = 23074200. Its totient is φ = 13673472.

The previous prime is 18160159. The next prime is 18160169. The reversal of 18160165 is 56106181.

It can be written as a sum of positive squares in 4 ways, for example, as 3175524 + 14984641 = 1782^2 + 3871^2 .

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 18160165 - 2³ = 18160157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18160169) 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, 106740 + ... + 106909.

It is an arithmetic number, because the mean of its divisors is an integer number (2884275).

Almost surely, 2^18160165 is an apocalyptic number.

It is an amenable number.

18160165 is a deficient number, since it is larger than the sum of its proper divisors (4914035).

18160165 is a wasteful number, since it uses less digits than its factorization.

18160165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213671.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 18160165 is about 4261.4745100728. The cubic root of 18160165 is about 262.8491619657.

The spelling of 18160165 in words is "eighteen million, one hundred sixty thousand, one hundred sixty-five".