2218485541 has 4 divisors (see below), whose sum is σ = 2270078272. Its totient is φ = 2166892812.

The previous prime is 2218485527. The next prime is 2218485547. The reversal of 2218485541 is 1455848122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1455848122 = 2 ⋅727924061.

It is a cyclic number.

It is not a de Polignac number, because 2218485541 - 2²⁵ = 2184931109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2218485494 and 2218485503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218485547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25796301 + ... + 25796386.

It is an arithmetic number, because the mean of its divisors is an integer number (567519568).

Almost surely, 2^2218485541 is an apocalyptic number.

It is an amenable number.

2218485541 is a deficient number, since it is larger than the sum of its proper divisors (51592731).

2218485541 is an equidigital number, since it uses as much as digits as its factorization.

2218485541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51592730.

The product of its digits is 102400, while the sum is 40.

The square root of 2218485541 is about 47100.8019146171. The cubic root of 2218485541 is about 1304.2240394176.

The spelling of 2218485541 in words is "two billion, two hundred eighteen million, four hundred eighty-five thousand, five hundred forty-one".