2185002789 has 4 divisors (see below), whose sum is σ = 2913337056. Its totient is φ = 1456668524.

The previous prime is 2185002779. The next prime is 2185002839. The reversal of 2185002789 is 9872005812.

2185002789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2185002789 - 2⁷ = 2185002661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2185002789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185002739) 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, 364167129 + ... + 364167134.

It is an arithmetic number, because the mean of its divisors is an integer number (728334264).

Almost surely, 2^2185002789 is an apocalyptic number.

It is an amenable number.

2185002789 is a deficient number, since it is larger than the sum of its proper divisors (728334267).

2185002789 is an equidigital number, since it uses as much as digits as its factorization.

2185002789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728334266.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 2185002789 is about 46744.0134027877. The cubic root of 2185002789 is about 1297.6293658161.

The spelling of 2185002789 in words is "two billion, one hundred eighty-five million, two thousand, seven hundred eighty-nine".