2185827645 has 8 divisors (see below), whose sum is σ = 3497324256. Its totient is φ = 1165774736.

The previous prime is 2185827641. The next prime is 2185827653. The reversal of 2185827645 is 5467285812.

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

It is a cyclic number.

It is not a de Polignac number, because 2185827645 - 2² = 2185827641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2185827594 and 2185827603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185827641) 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, 72860907 + ... + 72860936.

It is an arithmetic number, because the mean of its divisors is an integer number (437165532).

Almost surely, 2^2185827645 is an apocalyptic number.

It is an amenable number.

2185827645 is a deficient number, since it is larger than the sum of its proper divisors (1311496611).

2185827645 is a wasteful number, since it uses less digits than its factorization.

2185827645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145721851.

The product of its digits is 1075200, while the sum is 48.

The square root of 2185827645 is about 46752.8356893996. The cubic root of 2185827645 is about 1297.7926337552.

The spelling of 2185827645 in words is "two billion, one hundred eighty-five million, eight hundred twenty-seven thousand, six hundred forty-five".