2196778569 has 8 divisors (see below), whose sum is σ = 2931186240. Its totient is φ = 1463444976.

The previous prime is 2196778531. The next prime is 2196778579. The reversal of 2196778569 is 9658776912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2196778569 - 2²⁹ = 1659907657 is a prime.

It is a super-2 number, since 2×2196778569² = 9651672162435375522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2196778579) 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 in 7 ways as a sum of consecutive naturals, for example, 263734 + ... + 271935.

It is an arithmetic number, because the mean of its divisors is an integer number (366398280).

Almost surely, 2^2196778569 is an apocalyptic number.

It is an amenable number.

2196778569 is a deficient number, since it is larger than the sum of its proper divisors (734407671).

2196778569 is a wasteful number, since it uses less digits than its factorization.

2196778569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537039.

The product of its digits is 11430720, while the sum is 60.

The square root of 2196778569 is about 46869.8044480666. The cubic root of 2196778569 is about 1299.9563237792.

The spelling of 2196778569 in words is "two billion, one hundred ninety-six million, seven hundred seventy-eight thousand, five hundred sixty-nine".