2381221832 has 64 divisors (see below), whose sum is σ = 5092191360. Its totient is φ = 1033331200.

The previous prime is 2381221811. The next prime is 2381221837.

2381221832 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (2381221837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1660988 + ... + 1662420.

It is an arithmetic number, because the mean of its divisors is an integer number (79565490).

Almost surely, 2^2381221832 is an apocalyptic number.

2381221832 is a gapful number since it is divisible by the number (22) 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 2381221832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2546095680).

2381221832 is an abundant number, since it is smaller than the sum of its proper divisors (2710969528).

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

2381221832 is a wasteful number, since it uses less digits than its factorization.

2381221832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294 (or 2290 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 2381221832 is about 48797.7646209332. The cubic root of 2381221832 is about 1335.3648854139.

The spelling of 2381221832 in words is "two billion, three hundred eighty-one million, two hundred twenty-one thousand, eight hundred thirty-two".