2189552969 has 2 divisors, whose sum is σ = 2189552970. Its totient is φ = 2189552968.

The previous prime is 2189552957. The next prime is 2189552999. The reversal of 2189552969 is 9692559812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2032927744 + 156625225 = 45088^2 + 12515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2189552969 is a prime.

It is a super-2 number, since 2×2189552969² = 9588284408113429922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2189552999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094776484 + 1094776485.

It is an arithmetic number, because the mean of its divisors is an integer number (1094776485).

Almost surely, 2^2189552969 is an apocalyptic number.

It is an amenable number.

2189552969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189552969 is an equidigital number, since it uses as much as digits as its factorization.

2189552969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3499200, while the sum is 56.

The square root of 2189552969 is about 46792.6593495176. The cubic root of 2189552969 is about 1298.5294948475.

The spelling of 2189552969 in words is "two billion, one hundred eighty-nine million, five hundred fifty-two thousand, nine hundred sixty-nine".