2238866689 has 2 divisors, whose sum is σ = 2238866690. Its totient is φ = 2238866688.

The previous prime is 2238866683. The next prime is 2238866701. The reversal of 2238866689 is 9866688322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1643897025 + 594969664 = 40545^2 + 24392^2 .

It is a cyclic number.

It is not a de Polignac number, because 2238866689 - 2⁹ = 2238866177 is a prime.

It is a super-2 number, since 2×2238866689² = 10025048102227645442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2238866683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119433344 + 1119433345.

It is an arithmetic number, because the mean of its divisors is an integer number (1119433345).

Almost surely, 2^2238866689 is an apocalyptic number.

It is an amenable number.

2238866689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238866689 is an equidigital number, since it uses as much as digits as its factorization.

2238866689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11943936, while the sum is 58.

The square root of 2238866689 is about 47316.6639673593. The cubic root of 2238866689 is about 1308.2058240275.

The spelling of 2238866689 in words is "two billion, two hundred thirty-eight million, eight hundred sixty-six thousand, six hundred eighty-nine".