1928125782 has 96 divisors (see below), whose sum is σ = 4807071360. Its totient is φ = 574283520.

The previous prime is 1928125753. The next prime is 1928125831. The reversal of 1928125782 is 2875218291.

It is a super-2 number, since 2×1928125782² = 7435338062426223048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 312358 + ... + 318470.

It is an arithmetic number, because the mean of its divisors is an integer number (50073660).

Almost surely, 2^1928125782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1928125782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2403535680).

1928125782 is an abundant number, since it is smaller than the sum of its proper divisors (2878945578).

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

1928125782 is a wasteful number, since it uses less digits than its factorization.

1928125782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6200 (or 6188 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 1928125782 is about 43910.4290801172. The cubic root of 1928125782 is about 1244.6439161655.

The spelling of 1928125782 in words is "one billion, nine hundred twenty-eight million, one hundred twenty-five thousand, seven hundred eighty-two".