2216245784 has 8 divisors (see below), whose sum is σ = 4155460860. Its totient is φ = 1108122888.

The previous prime is 2216245781. The next prime is 2216245807. The reversal of 2216245784 is 4875426122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216245781) by changing a digit.

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 as a sum of consecutive naturals, namely, 138515354 + ... + 138515369.

Almost surely, 2^2216245784 is an apocalyptic number.

It is an amenable number.

2216245784 is a deficient number, since it is larger than the sum of its proper divisors (1939215076).

2216245784 is a wasteful number, since it uses less digits than its factorization.

2216245784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277030729 (or 277030725 counting only the distinct ones).

The product of its digits is 215040, while the sum is 41.

The square root of 2216245784 is about 47077.0197017611. The cubic root of 2216245784 is about 1303.7849818608.

The spelling of 2216245784 in words is "two billion, two hundred sixteen million, two hundred forty-five thousand, seven hundred eighty-four".