2289218438 has 8 divisors (see below), whose sum is σ = 3697968288. Its totient is φ = 1056562344.

The previous prime is 2289218389. The next prime is 2289218479. The reversal of 2289218438 is 8348129822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2289218392 and 2289218401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44023406 + ... + 44023457.

It is an arithmetic number, because the mean of its divisors is an integer number (462246036).

Almost surely, 2^2289218438 is an apocalyptic number.

2289218438 is a deficient number, since it is larger than the sum of its proper divisors (1408749850).

2289218438 is a wasteful number, since it uses less digits than its factorization.

2289218438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88046878.

The product of its digits is 442368, while the sum is 47.

The square root of 2289218438 is about 47845.7776402474. Note that the first 3 decimals coincide. The cubic root of 2289218438 is about 1317.9403212662.

The spelling of 2289218438 in words is "two billion, two hundred eighty-nine million, two hundred eighteen thousand, four hundred thirty-eight".