2184864769 has 4 divisors (see below), whose sum is σ = 2313386244. Its totient is φ = 2056343296.

The previous prime is 2184864757. The next prime is 2184864797. The reversal of 2184864769 is 9674684812.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1681984144 + 502880625 = 41012^2 + 22425^2 .

It is a cyclic number.

It is not a de Polignac number, because 2184864769 - 2²⁹ = 1647993857 is a prime.

It is a super-2 number, since 2×2184864769² = 9547268117634846722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2184864709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64260712 + ... + 64260745.

It is an arithmetic number, because the mean of its divisors is an integer number (578346561).

Almost surely, 2^2184864769 is an apocalyptic number.

It is an amenable number.

2184864769 is a deficient number, since it is larger than the sum of its proper divisors (128521475).

2184864769 is a wasteful number, since it uses less digits than its factorization.

2184864769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128521474.

The product of its digits is 4644864, while the sum is 55.

The square root of 2184864769 is about 46742.5370406870. The cubic root of 2184864769 is about 1297.6020428035.

The spelling of 2184864769 in words is "two billion, one hundred eighty-four million, eight hundred sixty-four thousand, seven hundred sixty-nine".