1928428339 has 2 divisors, whose sum is σ = 1928428340. Its totient is φ = 1928428338.

The previous prime is 1928428297. The next prime is 1928428343. The reversal of 1928428339 is 9338248291.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1928428339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1928428292 and 1928428301.

It is not a weakly prime, because it can be changed into another prime (1928428349) 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 as a sum of consecutive naturals, namely, 964214169 + 964214170.

It is an arithmetic number, because the mean of its divisors is an integer number (964214170).

Almost surely, 2^1928428339 is an apocalyptic number.

1928428339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1928428339 is an equidigital number, since it uses as much as digits as its factorization.

1928428339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 49.

The square root of 1928428339 is about 43913.8741060271. The cubic root of 1928428339 is about 1244.7090149672.

The spelling of 1928428339 in words is "one billion, nine hundred twenty-eight million, four hundred twenty-eight thousand, three hundred thirty-nine".