1678983139 has 2 divisors, whose sum is σ = 1678983140. Its totient is φ = 1678983138.

The previous prime is 1678983071. The next prime is 1678983181. The reversal of 1678983139 is 9313898761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1678983139 - 2²⁹ = 1142112227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1678983139.

It is not a weakly prime, because it can be changed into another prime (1678983199) 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, 839491569 + 839491570.

It is an arithmetic number, because the mean of its divisors is an integer number (839491570).

Almost surely, 2^1678983139 is an apocalyptic number.

1678983139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1678983139 is an equidigital number, since it uses as much as digits as its factorization.

1678983139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 55.

The square root of 1678983139 is about 40975.3967521975. The cubic root of 1678983139 is about 1188.5444952238.

The spelling of 1678983139 in words is "one billion, six hundred seventy-eight million, nine hundred eighty-three thousand, one hundred thirty-nine".