161844241 has 8 divisors (see below), whose sum is σ = 175924224. Its totient is φ = 147997200.

The previous prime is 161844229. The next prime is 161844251. The reversal of 161844241 is 142448161.

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

It is not a de Polignac number, because 161844241 - 2¹⁵ = 161811473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161844251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56785 + ... + 59566.

It is an arithmetic number, because the mean of its divisors is an integer number (21990528).

Almost surely, 2^161844241 is an apocalyptic number.

It is an amenable number.

161844241 is a deficient number, since it is larger than the sum of its proper divisors (14079983).

161844241 is a wasteful number, since it uses less digits than its factorization.

161844241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116471.

The product of its digits is 6144, while the sum is 31.

The square root of 161844241 is about 12721.8017984875. The cubic root of 161844241 is about 544.9614101678.

The spelling of 161844241 in words is "one hundred sixty-one million, eight hundred forty-four thousand, two hundred forty-one".