8256210849 has 10 divisors (see below), whose sum is σ = 12333352130. Its totient is φ = 5504140512.

The previous prime is 8256210817. The next prime is 8256210863. The reversal of 8256210849 is 9480126528.

8256210849 is a `hidden beast` number, since 8 + 2 + 562 + 1 + 0 + 84 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4703216400 + 3552994449 = 68580^2 + 59607^2 .

It is not a de Polignac number, because 8256210849 - 2⁵ = 8256210817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8256220849) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 50964184 + ... + 50964345.

It is an arithmetic number, because the mean of its divisors is an integer number (1233335213).

Almost surely, 2^8256210849 is an apocalyptic number.

It is an amenable number.

8256210849 is a deficient number, since it is larger than the sum of its proper divisors (4077141281).

8256210849 is a wasteful number, since it uses less digits than its factorization.

8256210849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101928541 (or 101928532 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 8256210849 is about 90863.6937891037. The cubic root of 8256210849 is about 2021.1269443639.

The spelling of 8256210849 in words is "eight billion, two hundred fifty-six million, two hundred ten thousand, eight hundred forty-nine".