2162249856 has 512 divisors, whose sum is σ = 7711200000. Its totient is φ = 589234176.

The previous prime is 2162249821. The next prime is 2162249857. The reversal of 2162249856 is 6589422612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162249857) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14511670 + ... + 14511818.

Almost surely, 2^2162249856 is an apocalyptic number.

2162249856 is a gapful number since it is divisible by the number (26) 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 2162249856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3855600000).

2162249856 is an abundant number, since it is smaller than the sum of its proper divisors (5548950144).

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

2162249856 is a wasteful number, since it uses less digits than its factorization.

2162249856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 203 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 2162249856 is about 46499.9984516129. The cubic root of 2162249856 is about 1293.1094701164.

The spelling of 2162249856 in words is "two billion, one hundred sixty-two million, two hundred forty-nine thousand, eight hundred fifty-six".