2199768409 has 2 divisors, whose sum is σ = 2199768410. Its totient is φ = 2199768408.

The previous prime is 2199768379. The next prime is 2199768419. The reversal of 2199768409 is 9048679912.

2199768409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1148193225 + 1051575184 = 33885^2 + 32428^2 .

It is a cyclic number.

It is not a de Polignac number, because 2199768409 - 2⁷ = 2199768281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2199768409.

It is not a weakly prime, because it can be changed into another prime (2199768419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099884204 + 1099884205.

It is an arithmetic number, because the mean of its divisors is an integer number (1099884205).

Almost surely, 2^2199768409 is an apocalyptic number.

It is an amenable number.

2199768409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2199768409 is an equidigital number, since it uses as much as digits as its factorization.

2199768409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 2199768409 is about 46901.6887649048. The cubic root of 2199768409 is about 1300.5458080872.

The spelling of 2199768409 in words is "two billion, one hundred ninety-nine million, seven hundred sixty-eight thousand, four hundred nine".