1678093 has 2 divisors, whose sum is σ = 1678094. Its totient is φ = 1678092.

The previous prime is 1678091. The next prime is 1678111. The reversal of 1678093 is 3908761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1444804 + 233289 = 1202^2 + 483^2 .

It is an emirp because it is prime and its reverse (3908761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1678093 - 2¹ = 1678091 is a prime.

It is a super-2 number, since 2×1678093² = 5631992233298, which contains 22 as substring.

Together with 1678091, it forms a pair of twin primes.

1678093 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1678091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839046 + 839047.

It is an arithmetic number, because the mean of its divisors is an integer number (839047).

2^1678093 is an apocalyptic number.

It is an amenable number.

1678093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1678093 is an equidigital number, since it uses as much as digits as its factorization.

1678093 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 34.

The square root of 1678093 is about 1295.4122895820. The cubic root of 1678093 is about 118.8334416316.

It can be divided in two parts, 167 and 8093, that multiplied together give a palindrome (1351531).

The spelling of 1678093 in words is "one million, six hundred seventy-eight thousand, ninety-three".