1928793841 has 8 divisors (see below), whose sum is σ = 2079187880. Its totient is φ = 1778689152.

The previous prime is 1928793821. The next prime is 1928793863. The reversal of 1928793841 is 1483978291.

It can be written as a sum of positive squares in 4 ways, for example, as 645363216 + 1283430625 = 25404^2 + 35825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1928793841 - 2¹¹ = 1928791793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1928793821) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 58386 + ... + 85243.

It is an arithmetic number, because the mean of its divisors is an integer number (259898485).

Almost surely, 2^1928793841 is an apocalyptic number.

It is an amenable number.

1928793841 is a deficient number, since it is larger than the sum of its proper divisors (150394039).

1928793841 is a wasteful number, since it uses less digits than its factorization.

1928793841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144675.

The product of its digits is 870912, while the sum is 52.

The square root of 1928793841 is about 43918.0354865743. The cubic root of 1928793841 is about 1244.7876480672.

The spelling of 1928793841 in words is "one billion, nine hundred twenty-eight million, seven hundred ninety-three thousand, eight hundred forty-one".