1685020038349 has 8 divisors (see below), whose sum is σ = 1693746674048. Its totient is φ = 1676300391360.

The previous prime is 1685020038347. The next prime is 1685020038371. The reversal of 1685020038349 is 9438300205861.

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 1685020038349 - 2¹ = 1685020038347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685020038347) by changing a digit.

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, 1263372 + ... + 2228485.

It is an arithmetic number, because the mean of its divisors is an integer number (211718334256).

Almost surely, 2^{1685020038349} is an apocalyptic number.

It is an amenable number.

1685020038349 is a deficient number, since it is larger than the sum of its proper divisors (8726635699).

1685020038349 is a wasteful number, since it uses less digits than its factorization.

1685020038349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494355.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 1685020038349 in words is "one trillion, six hundred eighty-five billion, twenty million, thirty-eight thousand, three hundred forty-nine".