8512747891 has 2 divisors, whose sum is σ = 8512747892. Its totient is φ = 8512747890.

The previous prime is 8512747853. The next prime is 8512747931. The reversal of 8512747891 is 1987472158.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8512747891 is a prime.

It is not a weakly prime, because it can be changed into another prime (8512717891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4256373945 + 4256373946.

It is an arithmetic number, because the mean of its divisors is an integer number (4256373946).

Almost surely, 2^8512747891 is an apocalyptic number.

8512747891 is a deficient number, since it is larger than the sum of its proper divisors (1).

8512747891 is an equidigital number, since it uses as much as digits as its factorization.

8512747891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 52.

The square root of 8512747891 is about 92264.5538167286. The cubic root of 8512747891 is about 2041.8472863321.

The spelling of 8512747891 in words is "eight billion, five hundred twelve million, seven hundred forty-seven thousand, eight hundred ninety-one".