161233162 has 4 divisors (see below), whose sum is σ = 241849746. Its totient is φ = 80616580.

The previous prime is 161233159. The next prime is 161233169. The reversal of 161233162 is 261332161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 261332161 = 227 ⋅1151243.

It can be written as a sum of positive squares in only one way, i.e., 155525841 + 5707321 = 12471^2 + 2389^2 .

It is a super-2 number, since 2×161233162² = 51992265057036488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161233169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40308289 + ... + 40308292.

Almost surely, 2^161233162 is an apocalyptic number.

161233162 is a deficient number, since it is larger than the sum of its proper divisors (80616584).

161233162 is an equidigital number, since it uses as much as digits as its factorization.

161233162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80616583.

The product of its digits is 1296, while the sum is 25.

The square root of 161233162 is about 12697.7620862891. The cubic root of 161233162 is about 544.2746707111.

The spelling of 161233162 in words is "one hundred sixty-one million, two hundred thirty-three thousand, one hundred sixty-two".