1685529140 has 48 divisors (see below), whose sum is σ = 3770867520. Its totient is φ = 631019520.

The previous prime is 1685529127. The next prime is 1685529143. The reversal of 1685529140 is 419255861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685529143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4820 + ... + 58260.

It is an arithmetic number, because the mean of its divisors is an integer number (78559740).

Almost surely, 2^1685529140 is an apocalyptic number.

1685529140 is a gapful number since it is divisible by the number (10) 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 1685529140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1885433760).

1685529140 is an abundant number, since it is smaller than the sum of its proper divisors (2085338380).

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

1685529140 is a wasteful number, since it uses less digits than its factorization.

1685529140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53552 (or 53550 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 1685529140 is about 41055.1962606440. The cubic root of 1685529140 is about 1190.0871202371.

The spelling of 1685529140 in words is "one billion, six hundred eighty-five million, five hundred twenty-nine thousand, one hundred forty".