1685227968 has 84 divisors (see below), whose sum is σ = 4909690968. Its totient is φ = 552522240.

The previous prime is 1685227931. The next prime is 1685227979. The reversal of 1685227968 is 8697225861.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11155 + ... + 59117.

It is an arithmetic number, because the mean of its divisors is an integer number (58448702).

Almost surely, 2^1685227968 is an apocalyptic number.

1685227968 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 1685227968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2454845484).

1685227968 is an abundant number, since it is smaller than the sum of its proper divisors (3224463000).

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

1685227968 is a wasteful number, since it uses less digits than its factorization.

1685227968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48042 (or 48029 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 1685227968 is about 41051.5282054152. The cubic root of 1685227968 is about 1190.0162340369.

The spelling of 1685227968 in words is "one billion, six hundred eighty-five million, two hundred twenty-seven thousand, nine hundred sixty-eight".