1685020038179 has 2 divisors, whose sum is σ = 1685020038180. Its totient is φ = 1685020038178.

The previous prime is 1685020038137. The next prime is 1685020038199. The reversal of 1685020038179 is 9718300205861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1685020038179 - 2⁸ = 1685020037923 is a prime.

It is not a weakly prime, because it can be changed into another prime (1685020038199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842510019089 + 842510019090.

It is an arithmetic number, because the mean of its divisors is an integer number (842510019090).

Almost surely, 2^{1685020038179} is an apocalyptic number.

1685020038179 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685020038179 is an equidigital number, since it uses as much as digits as its factorization.

1685020038179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 1685020038179 in words is "one trillion, six hundred eighty-five billion, twenty million, thirty-eight thousand, one hundred seventy-nine".