162818 has 4 divisors (see below), whose sum is σ = 244230. Its totient is φ = 81408.

The previous prime is 162791. The next prime is 162821. The reversal of 162818 is 818261.

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

It can be written as a sum of positive squares in only one way, i.e., 146689 + 16129 = 383^2 + 127^2 .

It is a super-2 number, since 2×162818² = 53019402248, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40703 + ... + 40706.

2¹⁶²⁸¹⁸ is an apocalyptic number.

162818 is a deficient number, since it is larger than the sum of its proper divisors (81412).

162818 is an equidigital number, since it uses as much as digits as its factorization.

162818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81411.

The product of its digits is 768, while the sum is 26.

The square root of 162818 is about 403.5071250920. The cubic root of 162818 is about 54.6052171572.

The spelling of 162818 in words is "one hundred sixty-two thousand, eight hundred eighteen".