161223162 has 8 divisors (see below), whose sum is σ = 322446336. Its totient is φ = 53741052.

The previous prime is 161223131. The next prime is 161223163. The reversal of 161223162 is 261322161.

161223162 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

161223162 is an admirable number.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (161223163) 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, 13435258 + ... + 13435269.

It is an arithmetic number, because the mean of its divisors is an integer number (40305792).

Almost surely, 2^161223162 is an apocalyptic number.

161223162 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161223162 is a wasteful number, since it uses less digits than its factorization.

161223162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26870532.

The product of its digits is 864, while the sum is 24.

The square root of 161223162 is about 12697.3683100082. The cubic root of 161223162 is about 544.2634181475.

The spelling of 161223162 in words is "one hundred sixty-one million, two hundred twenty-three thousand, one hundred sixty-two".