2189914271 has 2 divisors, whose sum is σ = 2189914272. Its totient is φ = 2189914270.

The previous prime is 2189914267. The next prime is 2189914289. The reversal of 2189914271 is 1724199812.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2189914271 - 2² = 2189914267 is a prime.

It is a super-2 number, since 2×2189914271² = 9591449028658922882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2189914231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094957135 + 1094957136.

It is an arithmetic number, because the mean of its divisors is an integer number (1094957136).

Almost surely, 2^2189914271 is an apocalyptic number.

2189914271 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189914271 is an equidigital number, since it uses as much as digits as its factorization.

2189914271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 44.

The square root of 2189914271 is about 46796.5198599212. The cubic root of 2189914271 is about 1298.6009151338.

The spelling of 2189914271 in words is "two billion, one hundred eighty-nine million, nine hundred fourteen thousand, two hundred seventy-one".