1685128632 has 32 divisors (see below), whose sum is σ = 4595806080. Its totient is φ = 510644960.

The previous prime is 1685128631. The next prime is 1685128657. The reversal of 1685128632 is 2368215861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685128631) 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 7 ways as a sum of consecutive naturals, for example, 3191268 + ... + 3191795.

It is an arithmetic number, because the mean of its divisors is an integer number (143618940).

Almost surely, 2^1685128632 is an apocalyptic number.

1685128632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1685128632 is an abundant number, since it is smaller than the sum of its proper divisors (2910677448).

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

1685128632 is a wasteful number, since it uses less digits than its factorization.

1685128632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6383083 (or 6383079 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 1685128632 is about 41050.3182935285. The cubic root of 1685128632 is about 1189.9928516860.

The spelling of 1685128632 in words is "one billion, six hundred eighty-five million, one hundred twenty-eight thousand, six hundred thirty-two".