1928985985056 has 96 divisors (see below), whose sum is σ = 5690186167680. Its totient is φ = 567728308224.

The previous prime is 1928985985049. The next prime is 1928985985057. The reversal of 1928985985056 is 6505895898291.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (1928985985057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33572641 + ... + 33630048.

It is an arithmetic number, because the mean of its divisors is an integer number (59272772580).

Almost surely, 2^{1928985985056} is an apocalyptic number.

1928985985056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1928985985056 is an abundant number, since it is smaller than the sum of its proper divisors (3761200182624).

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

1928985985056 is a wasteful number, since it uses less digits than its factorization.

1928985985056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67202738 (or 67202730 counting only the distinct ones).

The product of its (nonzero) digits is 559872000, while the sum is 75.

The spelling of 1928985985056 in words is "one trillion, nine hundred twenty-eight billion, nine hundred eighty-five million, nine hundred eighty-five thousand, fifty-six".