165118 has 4 divisors (see below), whose sum is σ = 247680. Its totient is φ = 82558.

The previous prime is 165103. The next prime is 165133. The reversal of 165118 is 811561.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (165103) and next prime (165133).

It is a congruent number.

It is an unprimeable number.

165118 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41278 + ... + 41281.

It is an arithmetic number, because the mean of its divisors is an integer number (61920).

2¹⁶⁵¹¹⁸ is an apocalyptic number.

165118 is a deficient number, since it is larger than the sum of its proper divisors (82562).

165118 is an equidigital number, since it uses as much as digits as its factorization.

165118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82561.

The product of its digits is 240, while the sum is 22.

The square root of 165118 is about 406.3471422319. The cubic root of 165118 is about 54.8611373011.

Adding to 165118 its reverse (811561), we get a palindrome (976679).

The spelling of 165118 in words is "one hundred sixty-five thousand, one hundred eighteen".