161829888 has 88 divisors (see below), whose sum is σ = 470646240. Its totient is φ = 49029120.

The previous prime is 161829839. The next prime is 161829929. The reversal of 161829888 is 888928161.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (88).

It is a self number, because there is not a number n which added to its sum of digits gives 161829888.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31398 + ... + 36186.

Almost surely, 2^161829888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161829888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235323120).

161829888 is an abundant number, since it is smaller than the sum of its proper divisors (308816352).

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

161829888 is a wasteful number, since it uses less digits than its factorization.

161829888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823 (or 4805 counting only the distinct ones).

The product of its digits is 442368, while the sum is 51.

The square root of 161829888 is about 12721.2376756352. The cubic root of 161829888 is about 544.9452998996.

The spelling of 161829888 in words is "one hundred sixty-one million, eight hundred twenty-nine thousand, eight hundred eighty-eight".