8530391644 has 48 divisors (see below), whose sum is σ = 15995105280. Its totient is φ = 3971782080.

The previous prime is 8530391641. The next prime is 8530391717. The reversal of 8530391644 is 4461930358.

It is a self number, because there is not a number n which added to its sum of digits gives 8530391644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8530391641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1100109 + ... + 1107835.

It is an arithmetic number, because the mean of its divisors is an integer number (333231360).

Almost surely, 2^8530391644 is an apocalyptic number.

It is an amenable number.

8530391644 is a deficient number, since it is larger than the sum of its proper divisors (7464713636).

8530391644 is a wasteful number, since it uses less digits than its factorization.

8530391644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8098 (or 8096 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 8530391644 is about 92360.1193372984. The cubic root of 8530391644 is about 2043.2569756154.

The spelling of 8530391644 in words is "eight billion, five hundred thirty million, three hundred ninety-one thousand, six hundred forty-four".