12938498289 has 24 divisors (see below), whose sum is σ = 19199817000. Its totient is φ = 8391087360.

The previous prime is 12938498281. The next prime is 12938498317. The reversal of 12938498289 is 98289483921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2619392400 + 10319105889 = 51180^2 + 101583^2 .

It is not a de Polignac number, because 12938498289 - 2³ = 12938498281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12938498281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78547 + ... + 179015.

It is an arithmetic number, because the mean of its divisors is an integer number (799992375).

Almost surely, 2^12938498289 is an apocalyptic number.

It is an amenable number.

12938498289 is a deficient number, since it is larger than the sum of its proper divisors (6261318711).

12938498289 is a wasteful number, since it uses less digits than its factorization.

12938498289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100865 (or 100862 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 63.

The spelling of 12938498289 in words is "twelve billion, nine hundred thirty-eight million, four hundred ninety-eight thousand, two hundred eighty-nine".