1685295616 has 20 divisors (see below), whose sum is σ = 3367300662. Its totient is φ = 842647552.

The previous prime is 1685295587. The next prime is 1685295637. The reversal of 1685295616 is 6165925861.

It can be written as a sum of positive squares in only one way, i.e., 905769216 + 779526400 = 30096^2 + 27920^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1685295616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1645285 + ... + 1646308.

Almost surely, 2^1685295616 is an apocalyptic number.

1685295616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1685295616 is a deficient number, since it is larger than the sum of its proper divisors (1682005046).

1685295616 is an frugal number, since it uses more digits than its factorization.

1685295616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291611 (or 3291595 counting only the distinct ones).

The product of its digits is 777600, while the sum is 49.

The square root of 1685295616 is about 41052.3521372406. The cubic root of 1685295616 is about 1190.0321569353.

The spelling of 1685295616 in words is "one billion, six hundred eighty-five million, two hundred ninety-five thousand, six hundred sixteen".