8513375869 has 2 divisors, whose sum is σ = 8513375870. Its totient is φ = 8513375868.

The previous prime is 8513375867. The next prime is 8513375881. The reversal of 8513375869 is 9685733158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6117273369 + 2396102500 = 78213^2 + 48950^2 .

It is a cyclic number.

It is not a de Polignac number, because 8513375869 - 2¹ = 8513375867 is a prime.

It is a super-2 number, since 2×8513375869² (a number of 21 digits) contains 22 as substring.

Together with 8513375867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8513375867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4256687934 + 4256687935.

It is an arithmetic number, because the mean of its divisors is an integer number (4256687935).

Almost surely, 2^8513375869 is an apocalyptic number.

It is an amenable number.

8513375869 is a deficient number, since it is larger than the sum of its proper divisors (1).

8513375869 is an equidigital number, since it uses as much as digits as its factorization.

8513375869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 55.

The square root of 8513375869 is about 92267.9568918701. The cubic root of 8513375869 is about 2041.8974935297.

The spelling of 8513375869 in words is "eight billion, five hundred thirteen million, three hundred seventy-five thousand, eight hundred sixty-nine".