2189084780 has 48 divisors (see below), whose sum is σ = 4675454784. Its totient is φ = 860778240.

The previous prime is 2189084767. The next prime is 2189084783. The reversal of 2189084780 is 874809812.

It is not an unprimeable number, because it can be changed into a prime (2189084783) 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, 527594 + ... + 531726.

It is an arithmetic number, because the mean of its divisors is an integer number (97405308).

Almost surely, 2^2189084780 is an apocalyptic number.

2189084780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2189084780 is an abundant number, since it is smaller than the sum of its proper divisors (2486370004).

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

2189084780 is a wasteful number, since it uses less digits than its factorization.

2189084780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4586 (or 4584 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 47.

The square root of 2189084780 is about 46787.6562781253. The cubic root of 2189084780 is about 1298.4369340109.

The spelling of 2189084780 in words is "two billion, one hundred eighty-nine million, eighty-four thousand, seven hundred eighty".