1928000281 has 9 divisors (see below), whose sum is σ = 2035695573. Its totient is φ = 1825736220.

The previous prime is 1928000273. The next prime is 1928000297. The reversal of 1928000281 is 1820008291.

It is a happy number.

The square root of 1928000281 is 43909.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1928000281 - 2³ = 1928000273 is a prime.

It is a super-2 number, since 2×1928000281² = 7434370167072157922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1928001281) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 833116 + ... + 835426.

It is an arithmetic number, because the mean of its divisors is an integer number (226188397).

Almost surely, 2^1928000281 is an apocalyptic number.

1928000281 is the 43909-th square number.

1928000281 is the 21955-th centered octagonal number.

It is an amenable number.

1928000281 is a deficient number, since it is larger than the sum of its proper divisors (107695292).

1928000281 is an frugal number, since it uses more digits than its factorization.

1928000281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4660 (or 2330 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The cubic root of 1928000281 is about 1244.6169111076.

Multiplying 1928000281 by its product of nonzero digits (2304), we get a square (4442112647424 = 2107632²).

The spelling of 1928000281 in words is "one billion, nine hundred twenty-eight million, two hundred eighty-one", and thus it is an aban number.