4131998813 has 2 divisors, whose sum is σ = 4131998814. Its totient is φ = 4131998812.

The previous prime is 4131998807. The next prime is 4131998821. The reversal of 4131998813 is 3188991314.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2890352644 + 1241646169 = 53762^2 + 35237^2 .

It is a cyclic number.

It is not a de Polignac number, because 4131998813 - 2⁸ = 4131998557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4131998833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2065999406 + 2065999407.

It is an arithmetic number, because the mean of its divisors is an integer number (2065999407).

Almost surely, 2^4131998813 is an apocalyptic number.

It is an amenable number.

4131998813 is a deficient number, since it is larger than the sum of its proper divisors (1).

4131998813 is an equidigital number, since it uses as much as digits as its factorization.

4131998813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 47.

The square root of 4131998813 is about 64280.6254870004. The cubic root of 4131998813 is about 1604.6736800964.

The spelling of 4131998813 in words is "four billion, one hundred thirty-one million, nine hundred ninety-eight thousand, eight hundred thirteen".