6516474889 has 2 divisors, whose sum is σ = 6516474890. Its totient is φ = 6516474888.

The previous prime is 6516474883. The next prime is 6516474907. The reversal of 6516474889 is 9884746156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5916224889 + 600250000 = 76917^2 + 24500^2 .

It is a cyclic number.

It is not a de Polignac number, because 6516474889 - 2¹¹ = 6516472841 is a prime.

It is not a weakly prime, because it can be changed into another prime (6516474883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3258237444 + 3258237445.

It is an arithmetic number, because the mean of its divisors is an integer number (3258237445).

Almost surely, 2^6516474889 is an apocalyptic number.

It is an amenable number.

6516474889 is a deficient number, since it is larger than the sum of its proper divisors (1).

6516474889 is an equidigital number, since it uses as much as digits as its factorization.

6516474889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11612160, while the sum is 58.

The square root of 6516474889 is about 80724.6857472979. The cubic root of 6516474889 is about 1867.8309842273.

The spelling of 6516474889 in words is "six billion, five hundred sixteen million, four hundred seventy-four thousand, eight hundred eighty-nine".