2668440185 has 8 divisors (see below), whose sum is σ = 3288672456. Its totient is φ = 2077056000.

The previous prime is 2668440167. The next prime is 2668440209. The reversal of 2668440185 is 5810448662.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 67848169 + 2600592016 = 8237^2 + 50996^2 .

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

It is not a de Polignac number, because 2668440185 - 2⁸ = 2668439929 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7211816 + ... + 7212185.

It is an arithmetic number, because the mean of its divisors is an integer number (411084057).

Almost surely, 2^2668440185 is an apocalyptic number.

It is an amenable number.

2668440185 is a deficient number, since it is larger than the sum of its proper divisors (620232271).

2668440185 is a wasteful number, since it uses less digits than its factorization.

2668440185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14424043.

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 2668440185 is about 51656.9471126585. The cubic root of 2668440185 is about 1387.0299028070.

The spelling of 2668440185 in words is "two billion, six hundred sixty-eight million, four hundred forty thousand, one hundred eighty-five".