2189832840 has 256 divisors, whose sum is σ = 8275680000. Its totient is φ = 510603264.

The previous prime is 2189832803. The next prime is 2189832871. The reversal of 2189832840 is 482389812.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 262656 + ... + 270864.

It is an arithmetic number, because the mean of its divisors is an integer number (32326875).

Almost surely, 2^2189832840 is an apocalyptic number.

2189832840 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 2189832840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4137840000).

2189832840 is an abundant number, since it is smaller than the sum of its proper divisors (6085847160).

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

2189832840 is a wasteful number, since it uses less digits than its factorization.

2189832840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8261 (or 8251 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 2189832840 is about 46795.6497978177. The cubic root of 2189832840 is about 1298.5848189662.

The spelling of 2189832840 in words is "two billion, one hundred eighty-nine million, eight hundred thirty-two thousand, eight hundred forty".