2238538543237 has 2 divisors, whose sum is σ = 2238538543238. Its totient is φ = 2238538543236.

The previous prime is 2238538543231. The next prime is 2238538543249. The reversal of 2238538543237 is 7323458358322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2213522059681 + 25016483556 = 1487791^2 + 158166^2 .

It is a cyclic number.

It is not a de Polignac number, because 2238538543237 - 2³¹ = 2236391059589 is a prime.

It is a super-2 number, since 2×2238538543237² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2238538543231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119269271618 + 1119269271619.

It is an arithmetic number, because the mean of its divisors is an integer number (1119269271619).

Almost surely, 2^{2238538543237} is an apocalyptic number.

It is an amenable number.

2238538543237 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238538543237 is an equidigital number, since it uses as much as digits as its factorization.

2238538543237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29030400, while the sum is 55.

The spelling of 2238538543237 in words is "two trillion, two hundred thirty-eight billion, five hundred thirty-eight million, five hundred forty-three thousand, two hundred thirty-seven".