1685064549 has 32 divisors (see below), whose sum is σ = 2643005440. Its totient is φ = 935064000.

The previous prime is 1685064547. The next prime is 1685064559. The reversal of 1685064549 is 9454605861.

It is not a de Polignac number, because 1685064549 - 2¹ = 1685064547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1685064498 and 1685064507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685064547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92874 + ... + 109524.

It is an arithmetic number, because the mean of its divisors is an integer number (82593920).

Almost surely, 2^1685064549 is an apocalyptic number.

It is an amenable number.

1685064549 is a deficient number, since it is larger than the sum of its proper divisors (957940891).

1685064549 is a wasteful number, since it uses less digits than its factorization.

1685064549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16801.

The product of its (nonzero) digits is 1036800, while the sum is 48.

The square root of 1685064549 is about 41049.5377440477. The cubic root of 1685064549 is about 1189.9777669268.

The spelling of 1685064549 in words is "one billion, six hundred eighty-five million, sixty-four thousand, five hundred forty-nine".