1685441464 has 64 divisors (see below), whose sum is σ = 3734530560. Its totient is φ = 698025600.

The previous prime is 1685441437. The next prime is 1685441473. The reversal of 1685441464 is 4641445861.

It is a self number, because there is not a number n which added to its sum of digits gives 1685441464.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 310179 + ... + 315565.

It is an arithmetic number, because the mean of its divisors is an integer number (58352040).

Almost surely, 2^1685441464 is an apocalyptic number.

1685441464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1685441464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867265280).

1685441464 is an abundant number, since it is smaller than the sum of its proper divisors (2049089096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1685441464 is a wasteful number, since it uses less digits than its factorization.

1685441464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5588 (or 5584 counting only the distinct ones).

The product of its digits is 368640, while the sum is 43.

The square root of 1685441464 is about 41054.1284647476. The cubic root of 1685441464 is about 1190.0664849986.

The spelling of 1685441464 in words is "one billion, six hundred eighty-five million, four hundred forty-one thousand, four hundred sixty-four".