11738891728 has 90 divisors (see below), whose sum is σ = 24077788722. Its totient is φ = 5540244480.

The previous prime is 11738891711. The next prime is 11738891797. The reversal of 11738891728 is 82719883711.

11738891728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 9 ways, for example, as 4887687744 + 6851203984 = 69912^2 + 82772^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 160806700 + ... + 160806772.

Almost surely, 2^11738891728 is an apocalyptic number.

It is an amenable number.

11738891728 is an abundant number, since it is smaller than the sum of its proper divisors (12338896994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11738891728 is an frugal number, since it uses more digits than its factorization.

11738891728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 173 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 55.

The spelling of 11738891728 in words is "eleven billion, seven hundred thirty-eight million, eight hundred ninety-one thousand, seven hundred twenty-eight".