2189404908 has 36 divisors (see below), whose sum is σ = 5859879480. Its totient is φ = 686871936.

The previous prime is 2189404883. The next prime is 2189404933. The reversal of 2189404908 is 8094049812.

It is an interprime number because it is at equal distance from previous prime (2189404883) and next prime (2189404933).

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1788118 + ... + 1789341.

It is an arithmetic number, because the mean of its divisors is an integer number (162774430).

Almost surely, 2^2189404908 is an apocalyptic number.

It is an amenable number.

2189404908 is an abundant number, since it is smaller than the sum of its proper divisors (3670474572).

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

2189404908 is a wasteful number, since it uses less digits than its factorization.

2189404908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577486 (or 3577481 counting only the distinct ones).

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

The square root of 2189404908 is about 46791.0772263260. The cubic root of 2189404908 is about 1298.5002246552.

The spelling of 2189404908 in words is "two billion, one hundred eighty-nine million, four hundred four thousand, nine hundred eight".