2238810181 has 2 divisors, whose sum is σ = 2238810182. Its totient is φ = 2238810180.

The previous prime is 2238810157. The next prime is 2238810191. The reversal of 2238810181 is 1810188322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2205805156 + 33005025 = 46966^2 + 5745^2 .

It is a cyclic number.

It is not a de Polignac number, because 2238810181 - 2¹⁷ = 2238679109 is a prime.

It is a super-2 number, since 2×2238810181² = 10024542053098505522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2238810131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119405090 + 1119405091.

It is an arithmetic number, because the mean of its divisors is an integer number (1119405091).

Almost surely, 2^2238810181 is an apocalyptic number.

It is an amenable number.

2238810181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238810181 is an equidigital number, since it uses as much as digits as its factorization.

2238810181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 2238810181 is about 47316.0668378089. The cubic root of 2238810181 is about 1308.1948177570.

The spelling of 2238810181 in words is "two billion, two hundred thirty-eight million, eight hundred ten thousand, one hundred eighty-one".