8045731205 has 16 divisors (see below), whose sum is σ = 9821726064. Its totient is φ = 6326284800.

The previous prime is 8045731171. The next prime is 8045731229. The reversal of 8045731205 is 5021375408.

It is a happy number.

It is a Cunningham number, because it is equal to 89698²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 23483716 + 8022247489 = 4846^2 + 89567^2 .

It is not a de Polignac number, because 8045731205 - 2⁸ = 8045730949 is a prime.

It is a super-2 number, since 2×8045731205² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11039 + ... + 127331.

It is an arithmetic number, because the mean of its divisors is an integer number (613857879).

Almost surely, 2^8045731205 is an apocalyptic number.

It is an amenable number.

8045731205 is a deficient number, since it is larger than the sum of its proper divisors (1775994859).

8045731205 is a wasteful number, since it uses less digits than its factorization.

8045731205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116536.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 8045731205 is about 89698.0000055743. Note that the first 5 decimals coincide. The cubic root of 8045731205 is about 2003.8036951157.

The spelling of 8045731205 in words is "eight billion, forty-five million, seven hundred thirty-one thousand, two hundred five".