2188000609 has 2 divisors, whose sum is σ = 2188000610. Its totient is φ = 2188000608.

The previous prime is 2188000567. The next prime is 2188000621. The reversal of 2188000609 is 9060008812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2150362384 + 37638225 = 46372^2 + 6135^2 .

It is a cyclic number.

It is not a de Polignac number, because 2188000609 - 2⁷ = 2188000481 is a prime.

It is not a weakly prime, because it can be changed into another prime (2188000679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094000304 + 1094000305.

It is an arithmetic number, because the mean of its divisors is an integer number (1094000305).

Almost surely, 2^2188000609 is an apocalyptic number.

It is an amenable number.

2188000609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188000609 is an equidigital number, since it uses as much as digits as its factorization.

2188000609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 2188000609 is about 46776.0687638455. The cubic root of 2188000609 is about 1298.2225430252. Note that the first 3 decimals are identical.

The spelling of 2188000609 in words is "two billion, one hundred eighty-eight million, six hundred nine", and thus it is an aban number.