2218580636 has 24 divisors (see below), whose sum is σ = 3964418640. Its totient is φ = 1085981312.

The previous prime is 2218580633. The next prime is 2218580671. The reversal of 2218580636 is 6360858122.

It is a junction number, because it is equal to n+sod(n) for n = 2218580593 and 2218580602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218580633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87800 + ... + 110208.

It is an arithmetic number, because the mean of its divisors is an integer number (165184110).

Almost surely, 2^2218580636 is an apocalyptic number.

It is an amenable number.

2218580636 is a deficient number, since it is larger than the sum of its proper divisors (1745838004).

2218580636 is a wasteful number, since it uses less digits than its factorization.

2218580636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22933 (or 22931 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 2218580636 is about 47101.8113876738. The cubic root of 2218580636 is about 1304.2426742642.

The spelling of 2218580636 in words is "two billion, two hundred eighteen million, five hundred eighty thousand, six hundred thirty-six".