162216434 has 4 divisors (see below), whose sum is σ = 243324654. Its totient is φ = 81108216.

The previous prime is 162216421. The next prime is 162216443. The reversal of 162216434 is 434612261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434612261 = 193 ⋅2251877.

It can be written as a sum of positive squares in only one way, i.e., 113955625 + 48260809 = 10675^2 + 6947^2 .

It is a junction number, because it is equal to n+sod(n) for n = 162216397 and 162216406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40554107 + ... + 40554110.

Almost surely, 2^162216434 is an apocalyptic number.

162216434 is a deficient number, since it is larger than the sum of its proper divisors (81108220).

162216434 is an equidigital number, since it uses as much as digits as its factorization.

162216434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81108219.

The product of its digits is 6912, while the sum is 29.

The square root of 162216434 is about 12736.4215539531. The cubic root of 162216434 is about 545.3788393700.

Adding to 162216434 its reverse (434612261), we get a palindrome (596828695).

The spelling of 162216434 in words is "one hundred sixty-two million, two hundred sixteen thousand, four hundred thirty-four".