2218918743 has 24 divisors (see below), whose sum is σ = 3375668400. Its totient is φ = 1400644224.

The previous prime is 2218918717. The next prime is 2218918783. The reversal of 2218918743 is 3478198122.

It is a happy number.

It is not a de Polignac number, because 2218918743 - 2⁵ = 2218918711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218918783) 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 in 23 ways as a sum of consecutive naturals, for example, 601621 + ... + 605297.

It is an arithmetic number, because the mean of its divisors is an integer number (140652850).

Almost surely, 2^2218918743 is an apocalyptic number.

2218918743 is a deficient number, since it is larger than the sum of its proper divisors (1156749657).

2218918743 is a wasteful number, since it uses less digits than its factorization.

2218918743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7231 (or 7228 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 2218918743 is about 47105.4003591945. The cubic root of 2218918743 is about 1304.3089255078.

The spelling of 2218918743 in words is "two billion, two hundred eighteen million, nine hundred eighteen thousand, seven hundred forty-three".