8256181845 has 16 divisors (see below), whose sum is σ = 13211121600. Its totient is φ = 4402886784.

The previous prime is 8256181831. The next prime is 8256181877. The reversal of 8256181845 is 5481816528.

It is not a de Polignac number, because 8256181845 - 2¹⁷ = 8256050773 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8256181794 and 8256181803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211497 + ... + 247473.

It is an arithmetic number, because the mean of its divisors is an integer number (825695100).

Almost surely, 2^8256181845 is an apocalyptic number.

It is an amenable number.

8256181845 is a deficient number, since it is larger than the sum of its proper divisors (4954939755).

8256181845 is a wasteful number, since it uses less digits than its factorization.

8256181845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51284.

The product of its digits is 614400, while the sum is 48.

The square root of 8256181845 is about 90863.5341872635. The cubic root of 8256181845 is about 2021.1245776271.

The spelling of 8256181845 in words is "eight billion, two hundred fifty-six million, one hundred eighty-one thousand, eight hundred forty-five".