2238044689 has 2 divisors, whose sum is σ = 2238044690. Its totient is φ = 2238044688.

The previous prime is 2238044681. The next prime is 2238044707. The reversal of 2238044689 is 9864408322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2236817025 + 1227664 = 47295^2 + 1108^2 .

It is a cyclic number.

It is not a de Polignac number, because 2238044689 - 2³ = 2238044681 is a prime.

It is a super-2 number, since 2×2238044689² = 10017688059922213442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2238044681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119022344 + 1119022345.

It is an arithmetic number, because the mean of its divisors is an integer number (1119022345).

Almost surely, 2^2238044689 is an apocalyptic number.

It is an amenable number.

2238044689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238044689 is an equidigital number, since it uses as much as digits as its factorization.

2238044689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 46.

The square root of 2238044689 is about 47307.9770123391. The cubic root of 2238044689 is about 1308.0457018216.

The spelling of 2238044689 in words is "two billion, two hundred thirty-eight million, forty-four thousand, six hundred eighty-nine".