2189773938 has 16 divisors (see below), whose sum is σ = 4777688736. Its totient is φ = 663567840.

The previous prime is 2189773909. The next prime is 2189773951. The reversal of 2189773938 is 8393779812.

It is a Curzon number.

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, 16589131 + ... + 16589262.

It is an arithmetic number, because the mean of its divisors is an integer number (298605546).

Almost surely, 2^2189773938 is an apocalyptic number.

2189773938 is an abundant number, since it is smaller than the sum of its proper divisors (2587914798).

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

2189773938 is a wasteful number, since it uses less digits than its factorization.

2189773938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33178409.

The product of its digits is 4572288, while the sum is 57.

The square root of 2189773938 is about 46795.0204402135. The cubic root of 2189773938 is about 1298.5731757748.

The spelling of 2189773938 in words is "two billion, one hundred eighty-nine million, seven hundred seventy-three thousand, nine hundred thirty-eight".