2164609569 has 16 divisors (see below), whose sum is σ = 2908224000. Its totient is φ = 1432052736.

The previous prime is 2164609567. The next prime is 2164609571. The reversal of 2164609569 is 9659064612.

It is an interprime number because it is at equal distance from previous prime (2164609567) and next prime (2164609571).

It is not a de Polignac number, because 2164609569 - 2¹ = 2164609567 is a prime.

It is a super-2 number, since 2×2164609569² = 9371069172412731522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2164609567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 784897 + ... + 787649.

It is an arithmetic number, because the mean of its divisors is an integer number (181764000).

Almost surely, 2^2164609569 is an apocalyptic number.

It is an amenable number.

2164609569 is a deficient number, since it is larger than the sum of its proper divisors (743614431).

2164609569 is a wasteful number, since it uses less digits than its factorization.

2164609569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4664.

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 2164609569 is about 46525.3647916919. The cubic root of 2164609569 is about 1293.5796991361.

The spelling of 2164609569 in words is "two billion, one hundred sixty-four million, six hundred nine thousand, five hundred sixty-nine".