2128619569 has 2 divisors, whose sum is σ = 2128619570. Its totient is φ = 2128619568.

The previous prime is 2128619567. The next prime is 2128619573. The reversal of 2128619569 is 9659168212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2096266225 + 32353344 = 45785^2 + 5688^2 .

It is a cyclic number.

It is not a de Polignac number, because 2128619569 - 2¹ = 2128619567 is a prime.

It is a super-2 number, since 2×2128619569² = 9062042539059491522, which contains 22 as substring.

Together with 2128619567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2128619567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064309784 + 1064309785.

It is an arithmetic number, because the mean of its divisors is an integer number (1064309785).

Almost surely, 2^2128619569 is an apocalyptic number.

It is an amenable number.

2128619569 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128619569 is an equidigital number, since it uses as much as digits as its factorization.

2128619569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 49.

The square root of 2128619569 is about 46136.9653206623. The cubic root of 2128619569 is about 1286.3703366533.

The spelling of 2128619569 in words is "two billion, one hundred twenty-eight million, six hundred nineteen thousand, five hundred sixty-nine".