162218065 has 4 divisors (see below), whose sum is σ = 194661684. Its totient is φ = 129774448.

The previous prime is 162218041. The next prime is 162218117. The reversal of 162218065 is 560812261.

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

It can be written as a sum of positive squares in 2 ways, for example, as 112529664 + 49688401 = 10608^2 + 7049^2 .

It is a cyclic number.

It is not a de Polignac number, because 162218065 - 2¹¹ = 162216017 is a prime.

It is a super-2 number, since 2×162218065² = 52629401224688450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16221802 + ... + 16221811.

It is an arithmetic number, because the mean of its divisors is an integer number (48665421).

Almost surely, 2^162218065 is an apocalyptic number.

It is an amenable number.

162218065 is a deficient number, since it is larger than the sum of its proper divisors (32443619).

162218065 is an equidigital number, since it uses as much as digits as its factorization.

162218065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32443618.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 162218065 is about 12736.4855827658. The cubic root of 162218065 is about 545.3806671953.

The spelling of 162218065 in words is "one hundred sixty-two million, two hundred eighteen thousand, sixty-five".