161882441 has 8 divisors (see below), whose sum is σ = 193052544. Its totient is φ = 132723360.

The previous prime is 161882431. The next prime is 161882443. The reversal of 161882441 is 144288161.

It is a happy number.

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

It is not a de Polignac number, because 161882441 - 2¹⁰ = 161881417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161882443) 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, 502580 + ... + 502901.

It is an arithmetic number, because the mean of its divisors is an integer number (24131568).

Almost surely, 2^161882441 is an apocalyptic number.

It is an amenable number.

161882441 is a deficient number, since it is larger than the sum of its proper divisors (31170103).

161882441 is a wasteful number, since it uses less digits than its factorization.

161882441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005511.

The product of its digits is 12288, while the sum is 35.

The square root of 161882441 is about 12723.3030695649. The cubic root of 161882441 is about 545.0042824342.

The spelling of 161882441 in words is "one hundred sixty-one million, eight hundred eighty-two thousand, four hundred forty-one".