2218451355 has 32 divisors (see below), whose sum is σ = 4008582720. Its totient is φ = 1163773440.

The previous prime is 2218451341. The next prime is 2218451359. The reversal of 2218451355 is 5531548122.

2218451355 is a `hidden beast` number, since 221 + 84 + 5 + 1 + 355 = 666.

It is not a de Polignac number, because 2218451355 - 2⁸ = 2218451099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2218451359) 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, 126462 + ... + 142931.

It is an arithmetic number, because the mean of its divisors is an integer number (125268210).

Almost surely, 2^2218451355 is an apocalyptic number.

2218451355 is a deficient number, since it is larger than the sum of its proper divisors (1790131365).

2218451355 is a wasteful number, since it uses less digits than its factorization.

2218451355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269468 (or 269462 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 2218451355 is about 47100.4390106929. The cubic root of 2218451355 is about 1304.2173401880.

Adding to 2218451355 its reverse (5531548122), we get a palindrome (7749999477).

The spelling of 2218451355 in words is "two billion, two hundred eighteen million, four hundred fifty-one thousand, three hundred fifty-five".