2431664813 has 2 divisors, whose sum is σ = 2431664814. Its totient is φ = 2431664812.

The previous prime is 2431664801. The next prime is 2431664869. The reversal of 2431664813 is 3184661342.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2205523369 + 226141444 = 46963^2 + 15038^2 .

It is a cyclic number.

It is not a de Polignac number, because 2431664813 - 2¹⁸ = 2431402669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2431669813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215832406 + 1215832407.

It is an arithmetic number, because the mean of its divisors is an integer number (1215832407).

Almost surely, 2^2431664813 is an apocalyptic number.

It is an amenable number.

2431664813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2431664813 is an equidigital number, since it uses as much as digits as its factorization.

2431664813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 2431664813 is about 49311.9134996808. The cubic root of 2431664813 is about 1344.7283786064.

The spelling of 2431664813 in words is "two billion, four hundred thirty-one million, six hundred sixty-four thousand, eight hundred thirteen".