5181770849 has 2 divisors, whose sum is σ = 5181770850. Its totient is φ = 5181770848.

The previous prime is 5181770791. The next prime is 5181770851. The reversal of 5181770849 is 9480771815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2850812449 + 2330958400 = 53393^2 + 48280^2 .

It is a cyclic number.

It is not a de Polignac number, because 5181770849 - 2³² = 886803553 is a prime.

Together with 5181770851, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 5181770797 and 5181770806.

It is not a weakly prime, because it can be changed into another prime (5181779849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2590885424 + 2590885425.

It is an arithmetic number, because the mean of its divisors is an integer number (2590885425).

Almost surely, 2^5181770849 is an apocalyptic number.

It is an amenable number.

5181770849 is a deficient number, since it is larger than the sum of its proper divisors (1).

5181770849 is an equidigital number, since it uses as much as digits as its factorization.

5181770849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 50.

The square root of 5181770849 is about 71984.5181202180. The cubic root of 5181770849 is about 1730.4513784272.

The spelling of 5181770849 in words is "five billion, one hundred eighty-one million, seven hundred seventy thousand, eight hundred forty-nine".