7992228137 has 2 divisors, whose sum is σ = 7992228138. Its totient is φ = 7992228136.

The previous prime is 7992228119. The next prime is 7992228157. The reversal of 7992228137 is 7318222997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5979000976 + 2013227161 = 77324^2 + 44869^2 .

It is a cyclic number.

It is not a de Polignac number, because 7992228137 - 2⁶ = 7992228073 is a prime.

It is not a weakly prime, because it can be changed into another prime (7992228107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3996114068 + 3996114069.

It is an arithmetic number, because the mean of its divisors is an integer number (3996114069).

Almost surely, 2^7992228137 is an apocalyptic number.

It is an amenable number.

7992228137 is a deficient number, since it is larger than the sum of its proper divisors (1).

7992228137 is an equidigital number, since it uses as much as digits as its factorization.

7992228137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 50.

The square root of 7992228137 is about 89399.2625081438. The cubic root of 7992228137 is about 1999.3521349081.

The spelling of 7992228137 in words is "seven billion, nine hundred ninety-two million, two hundred twenty-eight thousand, one hundred thirty-seven".