2188444231 has 2 divisors, whose sum is σ = 2188444232. Its totient is φ = 2188444230.

The previous prime is 2188444199. The next prime is 2188444243. The reversal of 2188444231 is 1324448812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2188444231 - 2⁵ = 2188444199 is a prime.

It is a super-2 number, since 2×2188444231² = 9578576304394362722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2188444261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094222115 + 1094222116.

It is an arithmetic number, because the mean of its divisors is an integer number (1094222116).

Almost surely, 2^2188444231 is an apocalyptic number.

2188444231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188444231 is an equidigital number, since it uses as much as digits as its factorization.

2188444231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49152, while the sum is 37.

The square root of 2188444231 is about 46780.8104996055. The cubic root of 2188444231 is about 1298.3102762674.

The spelling of 2188444231 in words is "two billion, one hundred eighty-eight million, four hundred forty-four thousand, two hundred thirty-one".