3128861479 has 2 divisors, whose sum is σ = 3128861480. Its totient is φ = 3128861478.

The previous prime is 3128861473. The next prime is 3128861497. The reversal of 3128861479 is 9741688213.

Together with next prime (3128861497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (9741688213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3128861479 - 2¹⁵ = 3128828711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3128861473) 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, 1564430739 + 1564430740.

It is an arithmetic number, because the mean of its divisors is an integer number (1564430740).

Almost surely, 2^3128861479 is an apocalyptic number.

3128861479 is a deficient number, since it is larger than the sum of its proper divisors (1).

3128861479 is an equidigital number, since it uses as much as digits as its factorization.

3128861479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 49.

The square root of 3128861479 is about 55936.2268927750. The cubic root of 3128861479 is about 1462.6108096721.

The spelling of 3128861479 in words is "three billion, one hundred twenty-eight million, eight hundred sixty-one thousand, four hundred seventy-nine".