2218034881 has 2 divisors, whose sum is σ = 2218034882. Its totient is φ = 2218034880.

The previous prime is 2218034867. The next prime is 2218034899. The reversal of 2218034881 is 1884308122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1663008400 + 555026481 = 40780^2 + 23559^2 .

It is a cyclic number.

It is not a de Polignac number, because 2218034881 - 2¹⁵ = 2218002113 is a prime.

It is a super-2 number, since 2×2218034881² = 9839357466665368322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2218034881.

It is not a weakly prime, because it can be changed into another prime (2218034281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109017440 + 1109017441.

It is an arithmetic number, because the mean of its divisors is an integer number (1109017441).

Almost surely, 2^2218034881 is an apocalyptic number.

It is an amenable number.

2218034881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218034881 is an equidigital number, since it uses as much as digits as its factorization.

2218034881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 2218034881 is about 47096.0176766571. The cubic root of 2218034881 is about 1304.1357206978.

The spelling of 2218034881 in words is "two billion, two hundred eighteen million, thirty-four thousand, eight hundred eighty-one".