2189808904804 has 24 divisors (see below), whose sum is σ = 3877289390520. Its totient is φ = 1082025052416.

The previous prime is 2189808904771. The next prime is 2189808904813. The reversal of 2189808904804 is 4084098089812.

It can be written as a sum of positive squares in 4 ways, for example, as 31524712704 + 2158284192100 = 177552^2 + 1469110^2 .

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, 970347 + ... + 2306770.

It is an arithmetic number, because the mean of its divisors is an integer number (161553724605).

Almost surely, 2^{2189808904804} is an apocalyptic number.

It is an amenable number.

2189808904804 is a deficient number, since it is larger than the sum of its proper divisors (1687480485716).

2189808904804 is a wasteful number, since it uses less digits than its factorization.

2189808904804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279087 (or 3279085 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 61.

The spelling of 2189808904804 in words is "two trillion, one hundred eighty-nine billion, eight hundred eight million, nine hundred four thousand, eight hundred four".