2185536329 has 4 divisors (see below), whose sum is σ = 2211868176. Its totient is φ = 2159204484.

The previous prime is 2185536319. The next prime is 2185536347. The reversal of 2185536329 is 9236355812.

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 2185536329 - 2²⁸ = 1917100873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2185536329.

It is not an unprimeable number, because it can be changed into a prime (2185536319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13165799 + ... + 13165964.

It is an arithmetic number, because the mean of its divisors is an integer number (552967044).

Almost surely, 2^2185536329 is an apocalyptic number.

It is an amenable number.

2185536329 is a deficient number, since it is larger than the sum of its proper divisors (26331847).

2185536329 is an equidigital number, since it uses as much as digits as its factorization.

2185536329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26331846.

The product of its digits is 388800, while the sum is 44.

The square root of 2185536329 is about 46749.7200954188. The cubic root of 2185536329 is about 1297.7349767915.

The spelling of 2185536329 in words is "two billion, one hundred eighty-five million, five hundred thirty-six thousand, three hundred twenty-nine".