1682166979 has 2 divisors, whose sum is σ = 1682166980. Its totient is φ = 1682166978.

The previous prime is 1682166973. The next prime is 1682167007. The reversal of 1682166979 is 9796612861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1682166979 - 2¹¹ = 1682164931 is a prime.

It is not a weakly prime, because it can be changed into another prime (1682166973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841083489 + 841083490.

It is an arithmetic number, because the mean of its divisors is an integer number (841083490).

Almost surely, 2^1682166979 is an apocalyptic number.

1682166979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1682166979 is an equidigital number, since it uses as much as digits as its factorization.

1682166979 is an evil number, because the sum of its binary digits is even.

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

The square root of 1682166979 is about 41014.2289821472. The cubic root of 1682166979 is about 1189.2952961092.

The spelling of 1682166979 in words is "one billion, six hundred eighty-two million, one hundred sixty-six thousand, nine hundred seventy-nine".