7918028849 has 2 divisors, whose sum is σ = 7918028850. Its totient is φ = 7918028848.

The previous prime is 7918028837. The next prime is 7918028887. The reversal of 7918028849 is 9488208197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5145479824 + 2772549025 = 71732^2 + 52655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7918028849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7918028794 and 7918028803.

It is not a weakly prime, because it can be changed into another prime (7918028819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3959014424 + 3959014425.

It is an arithmetic number, because the mean of its divisors is an integer number (3959014425).

Almost surely, 2^7918028849 is an apocalyptic number.

It is an amenable number.

7918028849 is a deficient number, since it is larger than the sum of its proper divisors (1).

7918028849 is an equidigital number, since it uses as much as digits as its factorization.

7918028849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 56.

The square root of 7918028849 is about 88983.3065748852. The cubic root of 7918028849 is about 1993.1456062295.

The spelling of 7918028849 in words is "seven billion, nine hundred eighteen million, twenty-eight thousand, eight hundred forty-nine".