1678983071 has 2 divisors, whose sum is σ = 1678983072. Its totient is φ = 1678983070.

The previous prime is 1678983067. The next prime is 1678983139. The reversal of 1678983071 is 1703898761.

It is a weak prime.

It is an emirp because it is prime and its reverse (1703898761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1678983071 - 2² = 1678983067 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1678983671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839491535 + 839491536.

It is an arithmetic number, because the mean of its divisors is an integer number (839491536).

Almost surely, 2^1678983071 is an apocalyptic number.

1678983071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1678983071 is an equidigital number, since it uses as much as digits as its factorization.

1678983071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 1678983071 is about 40975.3959224313. The cubic root of 1678983071 is about 1188.5444791782.

The spelling of 1678983071 in words is "one billion, six hundred seventy-eight million, nine hundred eighty-three thousand, seventy-one".