12982019409 has 12 divisors (see below), whose sum is σ = 18776074356. Its totient is φ = 8643478752.

The previous prime is 12982019311. The next prime is 12982019411. The reversal of 12982019409 is 90491028921.

It can be written as a sum of positive squares in 2 ways, for example, as 8045551809 + 4936467600 = 89697^2 + 70260^2 .

It is not a de Polignac number, because 12982019409 - 2¹¹ = 12982017361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12982019419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 926062 + ... + 939975.

It is an arithmetic number, because the mean of its divisors is an integer number (1564672863).

Almost surely, 2^12982019409 is an apocalyptic number.

It is an amenable number.

12982019409 is a deficient number, since it is larger than the sum of its proper divisors (5794054947).

12982019409 is a wasteful number, since it uses less digits than its factorization.

12982019409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866816 (or 1866813 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 12982019409 in words is "twelve billion, nine hundred eighty-two million, nineteen thousand, four hundred nine".