2129169247 has 2 divisors, whose sum is σ = 2129169248. Its totient is φ = 2129169246.

The previous prime is 2129169239. The next prime is 2129169269. The reversal of 2129169247 is 7429619212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2129169247 - 2³ = 2129169239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129169277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064584623 + 1064584624.

It is an arithmetic number, because the mean of its divisors is an integer number (1064584624).

Almost surely, 2^2129169247 is an apocalyptic number.

2129169247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129169247 is an equidigital number, since it uses as much as digits as its factorization.

2129169247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 2129169247 is about 46142.9219599279. The cubic root of 2129169247 is about 1286.4810545145.

The spelling of 2129169247 in words is "two billion, one hundred twenty-nine million, one hundred sixty-nine thousand, two hundred forty-seven".