1685048280 has 64 divisors (see below), whose sum is σ = 5074034400. Its totient is φ = 447667200.

The previous prime is 1685048273. The next prime is 1685048293. The reversal of 1685048280 is 828405861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6180 + ... + 58380.

Almost surely, 2^1685048280 is an apocalyptic number.

1685048280 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 1685048280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2537017200).

1685048280 is an abundant number, since it is smaller than the sum of its proper divisors (3388986120).

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

1685048280 is a wasteful number, since it uses less digits than its factorization.

1685048280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52484 (or 52480 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 1685048280 is about 41049.3395805584. The cubic root of 1685048280 is about 1189.9739372396.

The spelling of 1685048280 in words is "one billion, six hundred eighty-five million, forty-eight thousand, two hundred eighty".