2164687429 has 2 divisors, whose sum is σ = 2164687430. Its totient is φ = 2164687428.

The previous prime is 2164687391. The next prime is 2164687451. The reversal of 2164687429 is 9247864612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1885730625 + 278956804 = 43425^2 + 16702^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164687429 - 2¹¹ = 2164685381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164687229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082343714 + 1082343715.

It is an arithmetic number, because the mean of its divisors is an integer number (1082343715).

Almost surely, 2^2164687429 is an apocalyptic number.

It is an amenable number.

2164687429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164687429 is an equidigital number, since it uses as much as digits as its factorization.

2164687429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 49.

The square root of 2164687429 is about 46526.2015320400. The cubic root of 2164687429 is about 1293.5952087703.

The spelling of 2164687429 in words is "two billion, one hundred sixty-four million, six hundred eighty-seven thousand, four hundred twenty-nine".