2188538227 has 2 divisors, whose sum is σ = 2188538228. Its totient is φ = 2188538226.

The previous prime is 2188538203. The next prime is 2188538239. The reversal of 2188538227 is 7228358812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2188538227 - 2¹¹ = 2188536179 is a prime.

It is not a weakly prime, because it can be changed into another prime (2188538267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094269113 + 1094269114.

It is an arithmetic number, because the mean of its divisors is an integer number (1094269114).

Almost surely, 2^2188538227 is an apocalyptic number.

2188538227 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188538227 is an equidigital number, since it uses as much as digits as its factorization.

2188538227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 430080, while the sum is 46.

The square root of 2188538227 is about 46781.8151315231. The cubic root of 2188538227 is about 1298.3288639356.

The spelling of 2188538227 in words is "two billion, one hundred eighty-eight million, five hundred thirty-eight thousand, two hundred twenty-seven".