162169873 has 4 divisors (see below), whose sum is σ = 163657780. Its totient is φ = 160681968.

The previous prime is 162169871. The next prime is 162169913. The reversal of 162169873 is 378961261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 378961261 = 7 ⋅54137323.

It can be written as a sum of positive squares in 2 ways, for example, as 109998144 + 52171729 = 10488^2 + 7223^2 .

It is a cyclic number.

It is not a de Polignac number, because 162169873 - 2¹ = 162169871 is a prime.

It is a super-2 number, since 2×162169873² = 52598135417672258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162169871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743790 + ... + 744007.

It is an arithmetic number, because the mean of its divisors is an integer number (40914445).

Almost surely, 2^162169873 is an apocalyptic number.

It is an amenable number.

162169873 is a deficient number, since it is larger than the sum of its proper divisors (1487907).

162169873 is a wasteful number, since it uses less digits than its factorization.

162169873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487906.

The product of its digits is 108864, while the sum is 43.

The square root of 162169873 is about 12734.5935545662. The cubic root of 162169873 is about 545.3266543284.

The spelling of 162169873 in words is "one hundred sixty-two million, one hundred sixty-nine thousand, eight hundred seventy-three".