2189275945938 has 80 divisors (see below), whose sum is σ = 4977051298560. Its totient is φ = 719139254400.

The previous prime is 2189275945897. The next prime is 2189275945943. The reversal of 2189275945938 is 8395495729812.

2189275945938 is a `hidden beast` number, since 2 + 1 + 8 + 9 + 27 + 5 + 9 + 4 + 593 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24811783 + ... + 24899861.

It is an arithmetic number, because the mean of its divisors is an integer number (62213141232).

Almost surely, 2^{2189275945938} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2189275945938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2488525649280).

2189275945938 is an abundant number, since it is smaller than the sum of its proper divisors (2787775352622).

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

2189275945938 is a wasteful number, since it uses less digits than its factorization.

2189275945938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90325 (or 90316 counting only the distinct ones).

The product of its digits is 391910400, while the sum is 72.

The spelling of 2189275945938 in words is "two trillion, one hundred eighty-nine billion, two hundred seventy-five million, nine hundred forty-five thousand, nine hundred thirty-eight".