2218332687 has 16 divisors (see below), whose sum is σ = 3000179040. Its totient is φ = 1457713152.

The previous prime is 2218332661. The next prime is 2218332691. The reversal of 2218332687 is 7862338122.

It is not a de Polignac number, because 2218332687 - 2²⁸ = 1949897231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218332587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 685389 + ... + 688617.

It is an arithmetic number, because the mean of its divisors is an integer number (187511190).

Almost surely, 2^2218332687 is an apocalyptic number.

2218332687 is a deficient number, since it is larger than the sum of its proper divisors (781846353).

2218332687 is a wasteful number, since it uses less digits than its factorization.

2218332687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442.

The product of its digits is 193536, while the sum is 42.

The square root of 2218332687 is about 47099.1792603650. The cubic root of 2218332687 is about 1304.1940849831.

The spelling of 2218332687 in words is "two billion, two hundred eighteen million, three hundred thirty-two thousand, six hundred eighty-seven".