2216774538 has 24 divisors (see below), whose sum is σ = 5239649376. Its totient is φ = 671749800.

The previous prime is 2216774503. The next prime is 2216774557. The reversal of 2216774538 is 8354776122.

It is a super-2 number, since 2×2216774538² = 9828178704650226888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2216774493 and 2216774502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5597718 + ... + 5598113.

It is an arithmetic number, because the mean of its divisors is an integer number (218318724).

Almost surely, 2^2216774538 is an apocalyptic number.

2216774538 is an abundant number, since it is smaller than the sum of its proper divisors (3022874838).

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

2216774538 is a wasteful number, since it uses less digits than its factorization.

2216774538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11195850 (or 11195847 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 2216774538 is about 47082.6352066237. The cubic root of 2216774538 is about 1303.8886596977. Note that the first 3 decimals are identical.

The spelling of 2216774538 in words is "two billion, two hundred sixteen million, seven hundred seventy-four thousand, five hundred thirty-eight".