5185381849 has 2 divisors, whose sum is σ = 5185381850. Its totient is φ = 5185381848.

The previous prime is 5185381843. The next prime is 5185381867. The reversal of 5185381849 is 9481835815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2908660624 + 2276721225 = 53932^2 + 47715^2 .

It is a cyclic number.

It is not a de Polignac number, because 5185381849 - 2³ = 5185381841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5185381796 and 5185381805.

It is not a weakly prime, because it can be changed into another prime (5185381841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2592690924 + 2592690925.

It is an arithmetic number, because the mean of its divisors is an integer number (2592690925).

Almost surely, 2^5185381849 is an apocalyptic number.

It is an amenable number.

5185381849 is a deficient number, since it is larger than the sum of its proper divisors (1).

5185381849 is an equidigital number, since it uses as much as digits as its factorization.

5185381849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1382400, while the sum is 52.

The square root of 5185381849 is about 72009.5955342064. The cubic root of 5185381849 is about 1730.8532493435.

The spelling of 5185381849 in words is "five billion, one hundred eighty-five million, three hundred eighty-one thousand, eight hundred forty-nine".