161328468 has 96 divisors (see below), whose sum is σ = 455741440. Its totient is φ = 43390080.

The previous prime is 161328457. The next prime is 161328491. The reversal of 161328468 is 864823161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 432330 + ... + 432702.

Almost surely, 2^161328468 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 161328468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227870720).

161328468 is an abundant number, since it is smaller than the sum of its proper divisors (294412972).

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

161328468 is a wasteful number, since it uses less digits than its factorization.

161328468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 675 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 161328468 is about 12701.5143978976. The cubic root of 161328468 is about 544.3818910532.

The spelling of 161328468 in words is "one hundred sixty-one million, three hundred twenty-eight thousand, four hundred sixty-eight".