1928268845 has 8 divisors (see below), whose sum is σ = 2314441080. Its totient is φ = 1542269440.

The previous prime is 1928268821. The next prime is 1928268863. The reversal of 1928268845 is 5488628291.

It can be written as a sum of positive squares in 4 ways, for example, as 604618921 + 1323649924 = 24589^2 + 36382^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-1928268845 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17240 + ... + 64449.

It is an arithmetic number, because the mean of its divisors is an integer number (289305135).

Almost surely, 2^1928268845 is an apocalyptic number.

It is an amenable number.

1928268845 is a deficient number, since it is larger than the sum of its proper divisors (386172235).

1928268845 is an equidigital number, since it uses as much as digits as its factorization.

1928268845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86415.

The product of its digits is 2211840, while the sum is 53.

The square root of 1928268845 is about 43912.0580820348. The cubic root of 1928268845 is about 1244.6746987507.

The spelling of 1928268845 in words is "one billion, nine hundred twenty-eight million, two hundred sixty-eight thousand, eight hundred forty-five".