11903464609 has 3 divisors (see below), whose sum is σ = 11903573713. Its totient is φ = 11903355506.

The previous prime is 11903464571. The next prime is 11903464621. The reversal of 11903464609 is 90646430911.

The square root of 11903464609 is 109103.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-11903464609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11903464709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 54552 + ... + 163654.

Almost surely, 2^11903464609 is an apocalyptic number.

11903464609 is the 109103-rd square number.

11903464609 is the 54552-nd centered octagonal number.

It is an amenable number.

11903464609 is a deficient number, since it is larger than the sum of its proper divisors (109104).

11903464609 is an frugal number, since it uses more digits than its factorization.

11903464609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218206 (or 109103 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 11903464609 in words is "eleven billion, nine hundred three million, four hundred sixty-four thousand, six hundred nine".