12938498281 has 2 divisors, whose sum is σ = 12938498282. Its totient is φ = 12938498280.

The previous prime is 12938498273. The next prime is 12938498317. The reversal of 12938498281 is 18289483921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12929736681 + 8761600 = 113709^2 + 2960^2 .

It is an emirp because it is prime and its reverse (18289483921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12938498281 - 2³ = 12938498273 is a prime.

It is a super-2 number, since 2×12938498281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12938498231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6469249140 + 6469249141.

It is an arithmetic number, because the mean of its divisors is an integer number (6469249141).

Almost surely, 2^12938498281 is an apocalyptic number.

It is an amenable number.

12938498281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12938498281 is an equidigital number, since it uses as much as digits as its factorization.

12938498281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 55.

The spelling of 12938498281 in words is "twelve billion, nine hundred thirty-eight million, four hundred ninety-eight thousand, two hundred eighty-one".