7487456813 has 2 divisors, whose sum is σ = 7487456814. Its totient is φ = 7487456812.

The previous prime is 7487456723. The next prime is 7487456827. The reversal of 7487456813 is 3186547847.

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., 5440980169 + 2046476644 = 73763^2 + 45238^2 .

It is a cyclic number.

It is not a de Polignac number, because 7487456813 - 2²² = 7483262509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7487456833) 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, 3743728406 + 3743728407.

It is an arithmetic number, because the mean of its divisors is an integer number (3743728407).

Almost surely, 2^7487456813 is an apocalyptic number.

It is an amenable number.

7487456813 is a deficient number, since it is larger than the sum of its proper divisors (1).

7487456813 is an equidigital number, since it uses as much as digits as its factorization.

7487456813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4515840, while the sum is 53.

The square root of 7487456813 is about 86530.0919507197. The cubic root of 7487456813 is about 1956.3419913149.

The spelling of 7487456813 in words is "seven billion, four hundred eighty-seven million, four hundred fifty-six thousand, eight hundred thirteen".