2162223840 has 192 divisors, whose sum is σ = 7810338816. Its totient is φ = 492552192.

The previous prime is 2162223839. The next prime is 2162223841. The reversal of 2162223840 is 483222612.

It is an interprime number because it is at equal distance from previous prime (2162223839) and next prime (2162223841).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2162223798 and 2162223807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162223841) 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, 1185169 + ... + 1186991.

It is an arithmetic number, because the mean of its divisors is an integer number (40678848).

Almost surely, 2^2162223840 is an apocalyptic number.

2162223840 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 2162223840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3905169408).

2162223840 is an abundant number, since it is smaller than the sum of its proper divisors (5648114976).

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

2162223840 is a wasteful number, since it uses less digits than its factorization.

2162223840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201 (or 2193 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 2162223840 is about 46499.7187088266. The cubic root of 2162223840 is about 1293.1042839025.

The spelling of 2162223840 in words is "two billion, one hundred sixty-two million, two hundred twenty-three thousand, eight hundred forty".