162108173 has 4 divisors (see below), whose sum is σ = 167698140. Its totient is φ = 156518208.

The previous prime is 162108169. The next prime is 162108181. The reversal of 162108173 is 371801261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371801261 = 13 ⋅28600097.

It can be written as a sum of positive squares in 2 ways, for example, as 27478564 + 134629609 = 5242^2 + 11603^2 .

It is a cyclic number.

It is not a de Polignac number, because 162108173 - 2² = 162108169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 5589937 = 162108173 / (1 + 6 + 2 + 1 + 0 + 8 + 1 + 7 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162108673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2794940 + ... + 2794997.

It is an arithmetic number, because the mean of its divisors is an integer number (41924535).

Almost surely, 2^162108173 is an apocalyptic number.

It is an amenable number.

162108173 is a deficient number, since it is larger than the sum of its proper divisors (5589967).

162108173 is an equidigital number, since it uses as much as digits as its factorization.

162108173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5589966.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 162108173 is about 12732.1707889896. The cubic root of 162108173 is about 545.2574862764.

The spelling of 162108173 in words is "one hundred sixty-two million, one hundred eight thousand, one hundred seventy-three".