7806228137 has 2 divisors, whose sum is σ = 7806228138. Its totient is φ = 7806228136.

The previous prime is 7806228043. The next prime is 7806228161. The reversal of 7806228137 is 7318226087.

It is a happy number.

7806228137 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3984639376 + 3821588761 = 63124^2 + 61819^2 .

It is a cyclic number.

It is not a de Polignac number, because 7806228137 - 2¹⁶ = 7806162601 is a prime.

It is not a weakly prime, because it can be changed into another prime (7806228187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3903114068 + 3903114069.

It is an arithmetic number, because the mean of its divisors is an integer number (3903114069).

Almost surely, 2^7806228137 is an apocalyptic number.

It is an amenable number.

7806228137 is a deficient number, since it is larger than the sum of its proper divisors (1).

7806228137 is an equidigital number, since it uses as much as digits as its factorization.

7806228137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 7806228137 is about 88352.8615099703. The cubic root of 7806228137 is about 1983.7201881697.

The spelling of 7806228137 in words is "seven billion, eight hundred six million, two hundred twenty-eight thousand, one hundred thirty-seven".