161324844 has 12 divisors (see below), whose sum is σ = 376424664. Its totient is φ = 53774944.

The previous prime is 161324843. The next prime is 161324861. The reversal of 161324844 is 448423161.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (161324843) 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, 6721857 + ... + 6721880.

It is an arithmetic number, because the mean of its divisors is an integer number (31368722).

Almost surely, 2^161324844 is an apocalyptic number.

It is an amenable number.

161324844 is an abundant number, since it is smaller than the sum of its proper divisors (215099820).

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

161324844 is a wasteful number, since it uses less digits than its factorization.

161324844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13443744 (or 13443742 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 161324844 is about 12701.3717369424. The cubic root of 161324844 is about 544.3778147841.

The spelling of 161324844 in words is "one hundred sixty-one million, three hundred twenty-four thousand, eight hundred forty-four".