1928438975232 has 648 divisors, whose sum is σ = 7003690453760. Its totient is φ = 499530240000.

The previous prime is 1928438975219. The next prime is 1928438975261. The reversal of 1928438975232 is 2325798348291.

1928438975232 is a `hidden beast` number, since 1 + 9 + 28 + 4 + 3 + 89 + 7 + 523 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 1928438975232.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 856702107 + ... + 856704357.

Almost surely, 2^{1928438975232} is an apocalyptic number.

1928438975232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1928438975232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3501845226880).

1928438975232 is an abundant number, since it is smaller than the sum of its proper divisors (5075251478528).

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

1928438975232 is a wasteful number, since it uses less digits than its factorization.

1928438975232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741 (or 2713 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 63.

The spelling of 1928438975232 in words is "one trillion, nine hundred twenty-eight billion, four hundred thirty-eight million, nine hundred seventy-five thousand, two hundred thirty-two".