2189215972 has 12 divisors (see below), whose sum is σ = 3868324096. Its totient is φ = 1083980520.

The previous prime is 2189215949. The next prime is 2189216017. The reversal of 2189215972 is 2795129812.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2656404 + ... + 2657227.

Almost surely, 2^2189215972 is an apocalyptic number.

It is an amenable number.

2189215972 is a deficient number, since it is larger than the sum of its proper divisors (1679108124).

2189215972 is a wasteful number, since it uses less digits than its factorization.

2189215972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5313738 (or 5313736 counting only the distinct ones).

The product of its digits is 181440, while the sum is 46.

The square root of 2189215972 is about 46789.0582508347. The cubic root of 2189215972 is about 1298.4628719640.

The spelling of 2189215972 in words is "two billion, one hundred eighty-nine million, two hundred fifteen thousand, nine hundred seventy-two".