2218430136 has 32 divisors (see below), whose sum is σ = 5972697360. Its totient is φ = 682593792.

The previous prime is 2218430129. The next prime is 2218430141. The reversal of 2218430136 is 6310348122.

It is a congruent number.

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, 3554865 + ... + 3555488.

Almost surely, 2^2218430136 is an apocalyptic number.

2218430136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2218430136 is an abundant number, since it is smaller than the sum of its proper divisors (3754267224).

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

2218430136 is a wasteful number, since it uses less digits than its factorization.

2218430136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7110375 (or 7110371 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2218430136 is about 47100.2137574767. The cubic root of 2218430136 is about 1304.2131819906.

Adding to 2218430136 its reverse (6310348122), we get a palindrome (8528778258).

The spelling of 2218430136 in words is "two billion, two hundred eighteen million, four hundred thirty thousand, one hundred thirty-six".