9491628137 has 2 divisors, whose sum is σ = 9491628138. Its totient is φ = 9491628136.

The previous prime is 9491628131. The next prime is 9491628161. The reversal of 9491628137 is 7318261949.

9491628137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9044770816 + 446857321 = 95104^2 + 21139^2 .

It is a cyclic number.

It is not a de Polignac number, because 9491628137 - 2⁶ = 9491628073 is a prime.

It is not a weakly prime, because it can be changed into another prime (9491628131) 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, 4745814068 + 4745814069.

It is an arithmetic number, because the mean of its divisors is an integer number (4745814069).

Almost surely, 2^9491628137 is an apocalyptic number.

It is an amenable number.

9491628137 is a deficient number, since it is larger than the sum of its proper divisors (1).

9491628137 is an equidigital number, since it uses as much as digits as its factorization.

9491628137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 9491628137 is about 97424.9872312027. The cubic root of 9491628137 is about 2117.2894735886.

The spelling of 9491628137 in words is "nine billion, four hundred ninety-one million, six hundred twenty-eight thousand, one hundred thirty-seven".