1679859679 has 2 divisors, whose sum is σ = 1679859680. Its totient is φ = 1679859678.

The previous prime is 1679859631. The next prime is 1679859697. The reversal of 1679859679 is 9769589761.

Together with next prime (1679859697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (9769589761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1679859679 - 2⁷ = 1679859551 is a prime.

It is a super-2 number, since 2×1679859679² = 5643857082259966082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1679859079) by changing a digit.

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 as a sum of consecutive naturals, namely, 839929839 + 839929840.

It is an arithmetic number, because the mean of its divisors is an integer number (839929840).

Almost surely, 2^1679859679 is an apocalyptic number.

1679859679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1679859679 is an equidigital number, since it uses as much as digits as its factorization.

1679859679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51438240, while the sum is 67.

The square root of 1679859679 is about 40986.0912871672. The cubic root of 1679859679 is about 1188.7512921282.

The spelling of 1679859679 in words is "one billion, six hundred seventy-nine million, eight hundred fifty-nine thousand, six hundred seventy-nine".