1928766380 has 48 divisors (see below), whose sum is σ = 4281483360. Its totient is φ = 727833600.

The previous prime is 1928766379. The next prime is 1928766383. The reversal of 1928766380 is 836678291.

It is not an unprimeable number, because it can be changed into a prime (1928766383) 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, 81050 + ... + 102110.

It is an arithmetic number, because the mean of its divisors is an integer number (89197570).

Almost surely, 2^1928766380 is an apocalyptic number.

1928766380 is a gapful number since it is divisible by the number (10) 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 1928766380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2140741680).

1928766380 is an abundant number, since it is smaller than the sum of its proper divisors (2352716980).

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

1928766380 is a wasteful number, since it uses less digits than its factorization.

1928766380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21330 (or 21328 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 1928766380 is about 43917.7228462497. The cubic root of 1928766380 is about 1244.7817405279.

The spelling of 1928766380 in words is "one billion, nine hundred twenty-eight million, seven hundred sixty-six thousand, three hundred eighty".