8209328481 has 8 divisors (see below), whose sum is σ = 12161968160. Its totient is φ = 5472885636.

The previous prime is 8209328473. The next prime is 8209328527. The reversal of 8209328481 is 1848239028.

8209328481 is a `hidden beast` number, since 82 + 0 + 93 + 2 + 8 + 481 = 666.

It is not a de Polignac number, because 8209328481 - 2³ = 8209328473 is a prime.

It is a super-2 number, since 2×8209328481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8209328401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152024575 + ... + 152024628.

It is an arithmetic number, because the mean of its divisors is an integer number (1520246020).

Almost surely, 2^8209328481 is an apocalyptic number.

It is an amenable number.

8209328481 is a deficient number, since it is larger than the sum of its proper divisors (3952639679).

8209328481 is a wasteful number, since it uses less digits than its factorization.

8209328481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304049212 (or 304049206 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 8209328481 is about 90605.3446602351. The cubic root of 8209328481 is about 2017.2940666796.

The spelling of 8209328481 in words is "eight billion, two hundred nine million, three hundred twenty-eight thousand, four hundred eighty-one".