161643162 has 8 divisors (see below), whose sum is σ = 323286336. Its totient is φ = 53881052.

The previous prime is 161643161. The next prime is 161643173. The reversal of 161643162 is 261346161.

161643162 is digitally balanced in base 2 and base 3, because in such bases 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.

161643162 is an admirable number.

It is a super-2 number, since 2×161643162² = 52257023642716488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161643161) 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, 13470258 + ... + 13470269.

It is an arithmetic number, because the mean of its divisors is an integer number (40410792).

Almost surely, 2^161643162 is an apocalyptic number.

161643162 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.

161643162 is a wasteful number, since it uses less digits than its factorization.

161643162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26940532.

The product of its digits is 5184, while the sum is 30.

The square root of 161643162 is about 12713.8964129806. The cubic root of 161643162 is about 544.7356257804.

The spelling of 161643162 in words is "one hundred sixty-one million, six hundred forty-three thousand, one hundred sixty-two".