1028139713 has 2 divisors, whose sum is σ = 1028139714. Its totient is φ = 1028139712.

The previous prime is 1028139703. The next prime is 1028139727. The reversal of 1028139713 is 3179318201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 963047089 + 65092624 = 31033^2 + 8068^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028139713 - 2⁶ = 1028139649 is a prime.

It is not a weakly prime, because it can be changed into another prime (1028139703) 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, 514069856 + 514069857.

It is an arithmetic number, because the mean of its divisors is an integer number (514069857).

Almost surely, 2^1028139713 is an apocalyptic number.

It is an amenable number.

1028139713 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028139713 is an equidigital number, since it uses as much as digits as its factorization.

1028139713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 1028139713 is about 32064.6177741136. The cubic root of 1028139713 is about 1009.2932718933.

It can be divided in two parts, 10281 and 39713, that added together give a palindrome (49994).

The spelling of 1028139713 in words is "one billion, twenty-eight million, one hundred thirty-nine thousand, seven hundred thirteen".