1665846960 has 160 divisors (see below), whose sum is σ = 5261329920. Its totient is φ = 435953664.

The previous prime is 1665846937. The next prime is 1665846977. The reversal of 1665846960 is 696485661.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3794421 + ... + 3794859.

It is an arithmetic number, because the mean of its divisors is an integer number (32883312).

Almost surely, 2^1665846960 is an apocalyptic number.

1665846960 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 1665846960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2630664960).

1665846960 is an abundant number, since it is smaller than the sum of its proper divisors (3595482960).

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

1665846960 is a wasteful number, since it uses less digits than its factorization.

1665846960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The square root of 1665846960 is about 40814.7884963281. The cubic root of 1665846960 is about 1185.4366956784.

The spelling of 1665846960 in words is "one billion, six hundred sixty-five million, eight hundred forty-six thousand, nine hundred sixty".