2189721482 has 16 divisors (see below), whose sum is σ = 3745316232. Its totient is φ = 951191040.

The previous prime is 2189721449. The next prime is 2189721539. The reversal of 2189721482 is 2841279812.

It can be written as a sum of positive squares in 4 ways, for example, as 1599280081 + 590441401 = 39991^2 + 24299^2 .

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, 2476619 + ... + 2477502.

Almost surely, 2^2189721482 is an apocalyptic number.

2189721482 is a deficient number, since it is larger than the sum of its proper divisors (1555594750).

2189721482 is a wasteful number, since it uses less digits than its factorization.

2189721482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4954153.

The product of its digits is 129024, while the sum is 44.

The square root of 2189721482 is about 46794.4599498701. The cubic root of 2189721482 is about 1298.5628065920.

The spelling of 2189721482 in words is "two billion, one hundred eighty-nine million, seven hundred twenty-one thousand, four hundred eighty-two".