2218538955 has 32 divisors (see below), whose sum is σ = 3618929664. Its totient is φ = 1160343296.

The previous prime is 2218538929. The next prime is 2218538957. The reversal of 2218538955 is 5598358122.

It is a happy number.

2218538955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2218538955 - 2⁵ = 2218538923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2218538957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164062 + ... + 177068.

It is an arithmetic number, because the mean of its divisors is an integer number (113091552).

Almost surely, 2^2218538955 is an apocalyptic number.

2218538955 is a deficient number, since it is larger than the sum of its proper divisors (1400390709).

2218538955 is a wasteful number, since it uses less digits than its factorization.

2218538955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13235.

The product of its digits is 864000, while the sum is 48.

The square root of 2218538955 is about 47101.3689291511. The cubic root of 2218538955 is about 1304.2345065077.

The spelling of 2218538955 in words is "two billion, two hundred eighteen million, five hundred thirty-eight thousand, nine hundred fifty-five".