161882844 has 24 divisors (see below), whose sum is σ = 387936528. Its totient is φ = 52502400.

The previous prime is 161882839. The next prime is 161882849. The reversal of 161882844 is 448288161.

It is an interprime number because it is at equal distance from previous prime (161882839) and next prime (161882849).

It is a junction number, because it is equal to n+sod(n) for n = 161882796 and 161882805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161882849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181857 + ... + 182744.

It is an arithmetic number, because the mean of its divisors is an integer number (16164022).

Almost surely, 2^161882844 is an apocalyptic number.

It is an amenable number.

161882844 is an abundant number, since it is smaller than the sum of its proper divisors (226053684).

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

161882844 is a wasteful number, since it uses less digits than its factorization.

161882844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364645 (or 364643 counting only the distinct ones).

The product of its digits is 98304, while the sum is 42.

The square root of 161882844 is about 12723.3189066375. The cubic root of 161882844 is about 545.0047346894.

The spelling of 161882844 in words is "one hundred sixty-one million, eight hundred eighty-two thousand, eight hundred forty-four".