8581294873 has 2 divisors, whose sum is σ = 8581294874. Its totient is φ = 8581294872.

The previous prime is 8581294861. The next prime is 8581294937. The reversal of 8581294873 is 3784921858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7890235929 + 691058944 = 88827^2 + 26288^2 .

It is a cyclic number.

It is not a de Polignac number, because 8581294873 - 2²¹ = 8579197721 is a prime.

It is a super-2 number, since 2×8581294873² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8581294823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4290647436 + 4290647437.

It is an arithmetic number, because the mean of its divisors is an integer number (4290647437).

Almost surely, 2^8581294873 is an apocalyptic number.

It is an amenable number.

8581294873 is a deficient number, since it is larger than the sum of its proper divisors (1).

8581294873 is an equidigital number, since it uses as much as digits as its factorization.

8581294873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 55.

The square root of 8581294873 is about 92635.2787711032. The cubic root of 8581294873 is about 2047.3131464945.

The spelling of 8581294873 in words is "eight billion, five hundred eighty-one million, two hundred ninety-four thousand, eight hundred seventy-three".