2189106380 has 24 divisors (see below), whose sum is σ = 4641760032. Its totient is φ = 867140352.

The previous prime is 2189106377. The next prime is 2189106391. The reversal of 2189106380 is 836019812.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529277 + ... + 533396.

It is an arithmetic number, because the mean of its divisors is an integer number (193406668).

Almost surely, 2^2189106380 is an apocalyptic number.

2189106380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2189106380 is an abundant number, since it is smaller than the sum of its proper divisors (2452653652).

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

2189106380 is a wasteful number, since it uses less digits than its factorization.

2189106380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062785 (or 1062783 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 2189106380 is about 46787.8871076692. The cubic root of 2189106380 is about 1298.4412046153.

The spelling of 2189106380 in words is "two billion, one hundred eighty-nine million, one hundred six thousand, three hundred eighty".