2161743360 has 320 divisors, whose sum is σ = 8013772800. Its totient is φ = 486899712.

The previous prime is 2161743347. The next prime is 2161743361. The reversal of 2161743360 is 633471612.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161743361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4246786 + ... + 4247294.

It is an arithmetic number, because the mean of its divisors is an integer number (25043040).

Almost surely, 2^2161743360 is an apocalyptic number.

2161743360 is a gapful number since it is divisible by the number (20) 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 2161743360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4006886400).

2161743360 is an abundant number, since it is smaller than the sum of its proper divisors (5852029440).

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

2161743360 is an equidigital number, since it uses as much as digits as its factorization.

2161743360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 2161743360 is about 46494.5519389100. The cubic root of 2161743360 is about 1293.0084941324.

The spelling of 2161743360 in words is "two billion, one hundred sixty-one million, seven hundred forty-three thousand, three hundred sixty".