1928873 has 2 divisors, whose sum is σ = 1928874. Its totient is φ = 1928872.

The previous prime is 1928869. The next prime is 1928929. The reversal of 1928873 is 3788291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1149184 + 779689 = 1072^2 + 883^2 .

It is a cyclic number.

It is not a de Polignac number, because 1928873 - 2² = 1928869 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1928813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964436 + 964437.

It is an arithmetic number, because the mean of its divisors is an integer number (964437).

2^1928873 is an apocalyptic number.

It is an amenable number.

1928873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1928873 is an equidigital number, since it uses as much as digits as its factorization.

1928873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 1928873 is about 1388.8387235385. The cubic root of 1928873 is about 124.4804676809.

The spelling of 1928873 in words is "one million, nine hundred twenty-eight thousand, eight hundred seventy-three".