8634491859 has 16 divisors (see below), whose sum is σ = 13212380160. Its totient is φ = 4913348160.

The previous prime is 8634491857. The next prime is 8634491863. The reversal of 8634491859 is 9581944368.

8634491859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8634491859 - 2¹ = 8634491857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8634491799 and 8634491808.

It is not an unprimeable number, because it can be changed into a prime (8634491857) by changing a digit.

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, 855162 + ... + 865199.

It is an arithmetic number, because the mean of its divisors is an integer number (825773760).

Almost surely, 2^8634491859 is an apocalyptic number.

8634491859 is a deficient number, since it is larger than the sum of its proper divisors (4577888301).

8634491859 is a wasteful number, since it uses less digits than its factorization.

8634491859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720610.

The product of its digits is 7464960, while the sum is 57.

The square root of 8634491859 is about 92921.9665041587. The cubic root of 8634491859 is about 2051.5349882864.

The spelling of 8634491859 in words is "eight billion, six hundred thirty-four million, four hundred ninety-one thousand, eight hundred fifty-nine".