2182489920 has 672 divisors, whose sum is σ = 8946782208. Its totient is φ = 501645312.

The previous prime is 2182489889. The next prime is 2182489921. The reversal of 2182489920 is 299842812.

It is a happy number.

2182489920 is a `hidden beast` number, since 2 + 1 + 82 + 489 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2182489921) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17184897 + ... + 17185023.

It is an arithmetic number, because the mean of its divisors is an integer number (13313664).

Almost surely, 2^2182489920 is an apocalyptic number.

2182489920 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 2182489920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4473391104).

2182489920 is an abundant number, since it is smaller than the sum of its proper divisors (6764292288).

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

2182489920 is a wasteful number, since it uses less digits than its factorization.

2182489920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 2182489920 is about 46717.1266239695. The cubic root of 2182489920 is about 1297.1317274846.

The spelling of 2182489920 in words is "two billion, one hundred eighty-two million, four hundred eighty-nine thousand, nine hundred twenty".