2205178243 has 8 divisors (see below), whose sum is σ = 2242200240. Its totient is φ = 2168184480.

The previous prime is 2205178223. The next prime is 2205178249. The reversal of 2205178243 is 3428715022.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2205178243 is a prime.

It is a super-2 number, since 2×2205178243² = 9725622166801134098, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2205178199 and 2205178208.

It is not an unprimeable number, because it can be changed into a prime (2205178249) 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, 201396 + ... + 212062.

It is an arithmetic number, because the mean of its divisors is an integer number (280275030).

Almost surely, 2^2205178243 is an apocalyptic number.

2205178243 is a deficient number, since it is larger than the sum of its proper divisors (37021997).

2205178243 is a wasteful number, since it uses less digits than its factorization.

2205178243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14117.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 2205178243 is about 46959.3254104017. The cubic root of 2205178243 is about 1301.6110682857.

The spelling of 2205178243 in words is "two billion, two hundred five million, one hundred seventy-eight thousand, two hundred forty-three".