11982081928 has 16 divisors (see below), whose sum is σ = 22484943180. Its totient is φ = 5986097088.

The previous prime is 11982081889. The next prime is 11982081949. The reversal of 11982081928 is 82918028911.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11185600644 + 796481284 = 105762^2 + 28222^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 607675 + ... + 627082.

Almost surely, 2^11982081928 is an apocalyptic number.

It is an amenable number.

11982081928 is a deficient number, since it is larger than the sum of its proper divisors (10502861252).

11982081928 is a wasteful number, since it uses less digits than its factorization.

11982081928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235976 (or 1235972 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 49.

The spelling of 11982081928 in words is "eleven billion, nine hundred eighty-two million, eighty-one thousand, nine hundred twenty-eight".