12903369649 has 9 divisors (see below), whose sum is σ = 13367068897. Its totient is φ = 12455245264.

The previous prime is 12903369641. The next prime is 12903369709. The reversal of 12903369649 is 94696330921.

The square root of 12903369649 is 113593.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1589218225 + 11314151424 = 39865^2 + 106368^2 .

It is not a de Polignac number, because 12903369649 - 2³ = 12903369641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12903369596 and 12903369605.

It is not an unprimeable number, because it can be changed into a prime (12903369641) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3292239 + ... + 3296155.

Almost surely, 2^12903369649 is an apocalyptic number.

12903369649 is the 113593-rd square number.

12903369649 is the 56797-th centered octagonal number.

It is an amenable number.

12903369649 is a deficient number, since it is larger than the sum of its proper divisors (463699248).

12903369649 is an frugal number, since it uses more digits than its factorization.

12903369649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7892 (or 3946 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 52.

The spelling of 12903369649 in words is "twelve billion, nine hundred three million, three hundred sixty-nine thousand, six hundred forty-nine".