7820630449 has 2 divisors, whose sum is σ = 7820630450. Its totient is φ = 7820630448.

The previous prime is 7820630387. The next prime is 7820630491. The reversal of 7820630449 is 9440360287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6527508849 + 1293121600 = 80793^2 + 35960^2 .

It is a cyclic number.

It is not a de Polignac number, because 7820630449 - 2⁹ = 7820629937 is a prime.

It is a super-2 number, since 2×7820630449² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7820630249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3910315224 + 3910315225.

It is an arithmetic number, because the mean of its divisors is an integer number (3910315225).

Almost surely, 2^7820630449 is an apocalyptic number.

It is an amenable number.

7820630449 is a deficient number, since it is larger than the sum of its proper divisors (1).

7820630449 is an equidigital number, since it uses as much as digits as its factorization.

7820630449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 7820630449 is about 88434.3284533783. The cubic root of 7820630449 is about 1984.9394114244.

The spelling of 7820630449 in words is "seven billion, eight hundred twenty million, six hundred thirty thousand, four hundred forty-nine".