8138448287 has 2 divisors, whose sum is σ = 8138448288. Its totient is φ = 8138448286.

The previous prime is 8138448247. The next prime is 8138448323. The reversal of 8138448287 is 7828448318.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8138448287 - 2²² = 8134253983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8138448247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4069224143 + 4069224144.

It is an arithmetic number, because the mean of its divisors is an integer number (4069224144).

Almost surely, 2^8138448287 is an apocalyptic number.

8138448287 is a deficient number, since it is larger than the sum of its proper divisors (1).

8138448287 is an equidigital number, since it uses as much as digits as its factorization.

8138448287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2752512, while the sum is 53.

The square root of 8138448287 is about 90213.3487184685. The cubic root of 8138448287 is about 2011.4714345472.

The spelling of 8138448287 in words is "eight billion, one hundred thirty-eight million, four hundred forty-eight thousand, two hundred eighty-seven".