1685541059 has 2 divisors, whose sum is σ = 1685541060. Its totient is φ = 1685541058.

The previous prime is 1685541023. The next prime is 1685541073. The reversal of 1685541059 is 9501455861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1685541059 - 2²⁰ = 1684492483 is a prime.

It is not a weakly prime, because it can be changed into another prime (1685541089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842770529 + 842770530.

It is an arithmetic number, because the mean of its divisors is an integer number (842770530).

Almost surely, 2^1685541059 is an apocalyptic number.

1685541059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685541059 is an equidigital number, since it uses as much as digits as its factorization.

1685541059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 44.

The square root of 1685541059 is about 41055.3414186266. The cubic root of 1685541059 is about 1190.0899254126.

The spelling of 1685541059 in words is "one billion, six hundred eighty-five million, five hundred forty-one thousand, fifty-nine".