8463481813 has 2 divisors, whose sum is σ = 8463481814. Its totient is φ = 8463481812.

The previous prime is 8463481781. The next prime is 8463481823. The reversal of 8463481813 is 3181843648.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4883493924 + 3579987889 = 69882^2 + 59833^2 .

It is a cyclic number.

It is not a de Polignac number, because 8463481813 - 2⁵ = 8463481781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8463481823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4231740906 + 4231740907.

It is an arithmetic number, because the mean of its divisors is an integer number (4231740907).

Almost surely, 2^8463481813 is an apocalyptic number.

It is an amenable number.

8463481813 is a deficient number, since it is larger than the sum of its proper divisors (1).

8463481813 is an equidigital number, since it uses as much as digits as its factorization.

8463481813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 442368, while the sum is 46.

The square root of 8463481813 is about 91997.1837231988. The cubic root of 8463481813 is about 2037.9007153848.

The spelling of 8463481813 in words is "eight billion, four hundred sixty-three million, four hundred eighty-one thousand, eight hundred thirteen".