161829912 has 16 divisors (see below), whose sum is σ = 404574840. Its totient is φ = 53943296.

The previous prime is 161829839. The next prime is 161829929. The reversal of 161829912 is 219928161.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3371433 + ... + 3371480.

Almost surely, 2^161829912 is an apocalyptic number.

161829912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161829912 is an abundant number, since it is smaller than the sum of its proper divisors (242744928).

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

161829912 is a wasteful number, since it uses less digits than its factorization.

161829912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6742922 (or 6742918 counting only the distinct ones).

The product of its digits is 15552, while the sum is 39.

The square root of 161829912 is about 12721.2386189396. The cubic root of 161829912 is about 544.9453268388.

The spelling of 161829912 in words is "one hundred sixty-one million, eight hundred twenty-nine thousand, nine hundred twelve".