1685099088 has 60 divisors (see below), whose sum is σ = 4736803968. Its totient is φ = 559214400.

The previous prime is 1685099083. The next prime is 1685099089. The reversal of 1685099088 is 8809905861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685099083) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 6913 + ... + 58463.

Almost surely, 2^1685099088 is an apocalyptic number.

1685099088 is a gapful number since it is divisible by the number (18) 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 1685099088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2368401984).

1685099088 is an abundant number, since it is smaller than the sum of its proper divisors (3051704880).

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

1685099088 is a wasteful number, since it uses less digits than its factorization.

1685099088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51792 (or 51783 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The square root of 1685099088 is about 41049.9584409047. The cubic root of 1685099088 is about 1189.9858972507.

The spelling of 1685099088 in words is "one billion, six hundred eighty-five million, ninety-nine thousand, eighty-eight".