4161891328 has 88 divisors (see below), whose sum is σ = 10009011200. Its totient is φ = 1689735168.

The previous prime is 4161891319. The next prime is 4161891341. The reversal of 4161891328 is 8231981614.

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 7 ways as a sum of consecutive naturals, for example, 120913 + ... + 151471.

Almost surely, 2^4161891328 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 4161891328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5004505600).

4161891328 is an abundant number, since it is smaller than the sum of its proper divisors (5847119872).

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

4161891328 is a wasteful number, since it uses less digits than its factorization.

4161891328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30605 (or 30587 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The square root of 4161891328 is about 64512.7222181796. The cubic root of 4161891328 is about 1608.5340008409.

The spelling of 4161891328 in words is "four billion, one hundred sixty-one million, eight hundred ninety-one thousand, three hundred twenty-eight".