8091643884 has 96 divisors (see below), whose sum is σ = 20294608320. Its totient is φ = 2500313088.

The previous prime is 8091643877. The next prime is 8091643891. The reversal of 8091643884 is 4883461908.

It is an interprime number because it is at equal distance from previous prime (8091643877) and next prime (8091643891).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3986982 + ... + 3989010.

It is an arithmetic number, because the mean of its divisors is an integer number (211402170).

Almost surely, 2^8091643884 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 8091643884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10147304160).

8091643884 is an abundant number, since it is smaller than the sum of its proper divisors (12202964436).

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

8091643884 is a wasteful number, since it uses less digits than its factorization.

8091643884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339 (or 2337 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 51.

The square root of 8091643884 is about 89953.5651544729. The cubic root of 8091643884 is about 2007.6080127075.

The spelling of 8091643884 in words is "eight billion, ninety-one million, six hundred forty-three thousand, eight hundred eighty-four".