11904337449 has 33 divisors (see below), whose sum is σ = 17896263223. Its totient is φ = 7918549632.

The previous prime is 11904337411. The next prime is 11904337531. The reversal of 11904337449 is 94473340911.

The square root of 11904337449 is 109107.

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

It can be written as a sum of positive squares in only one way, i.e., 7274895849 + 4629441600 = 85293^2 + 68040^2 .

It is not a de Polignac number, because 11904337449 - 2⁹ = 11904336937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11904333449) by changing a digit.

It is a polite number, since it can be written in 32 ways as a sum of consecutive naturals, for example, 26512777 + ... + 26513225.

Almost surely, 2^11904337449 is an apocalyptic number.

11904337449 is the 109107-th square number.

11904337449 is the 54554-th centered octagonal number.

It is an amenable number.

11904337449 is a deficient number, since it is larger than the sum of its proper divisors (5991925774).

11904337449 is an frugal number, since it uses more digits than its factorization.

11904337449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 11904337449 in words is "eleven billion, nine hundred four million, three hundred thirty-seven thousand, four hundred forty-nine".