1685350385 has 8 divisors (see below), whose sum is σ = 2069453760. Its totient is φ = 1316924784.

The previous prime is 1685350379. The next prime is 1685350391. The reversal of 1685350385 is 5830535861.

It is an interprime number because it is at equal distance from previous prime (1685350379) and next prime (1685350391).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1685350385 - 2⁶ = 1685350321 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3919205 + ... + 3919634.

It is an arithmetic number, because the mean of its divisors is an integer number (258681720).

Almost surely, 2^1685350385 is an apocalyptic number.

It is an amenable number.

1685350385 is a deficient number, since it is larger than the sum of its proper divisors (384103375).

1685350385 is an equidigital number, since it uses as much as digits as its factorization.

1685350385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7838887.

The product of its (nonzero) digits is 432000, while the sum is 44.

The square root of 1685350385 is about 41053.0191946950. The cubic root of 1685350385 is about 1190.0450480793.

The spelling of 1685350385 in words is "one billion, six hundred eighty-five million, three hundred fifty thousand, three hundred eighty-five".