2187244799 has 2 divisors, whose sum is σ = 2187244800. Its totient is φ = 2187244798.

The previous prime is 2187244783. The next prime is 2187244819. The reversal of 2187244799 is 9974427812.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2187244799 - 2⁴ = 2187244783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2187244799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2187244739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093622399 + 1093622400.

It is an arithmetic number, because the mean of its divisors is an integer number (1093622400).

Almost surely, 2^2187244799 is an apocalyptic number.

2187244799 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187244799 is an equidigital number, since it uses as much as digits as its factorization.

2187244799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 53.

The square root of 2187244799 is about 46767.9890416511. The cubic root of 2187244799 is about 1298.0730423686.

The spelling of 2187244799 in words is "two billion, one hundred eighty-seven million, two hundred forty-four thousand, seven hundred ninety-nine".