1682166427 has 2 divisors, whose sum is σ = 1682166428. Its totient is φ = 1682166426.

The previous prime is 1682166403. The next prime is 1682166443. The reversal of 1682166427 is 7246612861.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1682166427 is a prime.

It is not a weakly prime, because it can be changed into another prime (1682166457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841083213 + 841083214.

It is an arithmetic number, because the mean of its divisors is an integer number (841083214).

Almost surely, 2^1682166427 is an apocalyptic number.

1682166427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1682166427 is an equidigital number, since it uses as much as digits as its factorization.

1682166427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 1682166427 is about 41014.2222527747. Note that the first 4 decimals coincide. The cubic root of 1682166427 is about 1189.2951660209.

The spelling of 1682166427 in words is "one billion, six hundred eighty-two million, one hundred sixty-six thousand, four hundred twenty-seven".