2188468129 has 2 divisors, whose sum is σ = 2188468130. Its totient is φ = 2188468128.

The previous prime is 2188468099. The next prime is 2188468153. The reversal of 2188468129 is 9218648812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1650228129 + 538240000 = 40623^2 + 23200^2 .

It is a cyclic number.

It is not a de Polignac number, because 2188468129 - 2⁷ = 2188468001 is a prime.

It is not a weakly prime, because it can be changed into another prime (2188468159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094234064 + 1094234065.

It is an arithmetic number, because the mean of its divisors is an integer number (1094234065).

Almost surely, 2^2188468129 is an apocalyptic number.

It is an amenable number.

2188468129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188468129 is an equidigital number, since it uses as much as digits as its factorization.

2188468129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 442368, while the sum is 49.

The square root of 2188468129 is about 46781.0659241535. The cubic root of 2188468129 is about 1298.3150021370.

The spelling of 2188468129 in words is "two billion, one hundred eighty-eight million, four hundred sixty-eight thousand, one hundred twenty-nine".