6618341899 has 4 divisors (see below), whose sum is σ = 7127445136. Its totient is φ = 6109238664.

The previous prime is 6618341881. The next prime is 6618341903. The reversal of 6618341899 is 9981438166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6618341899 - 2¹⁹ = 6617817611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6618341099) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 254551599 + ... + 254551624.

It is an arithmetic number, because the mean of its divisors is an integer number (1781861284).

Almost surely, 2^6618341899 is an apocalyptic number.

6618341899 is a deficient number, since it is larger than the sum of its proper divisors (509103237).

6618341899 is a wasteful number, since it uses less digits than its factorization.

6618341899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509103236.

The product of its digits is 2239488, while the sum is 55.

The square root of 6618341899 is about 81353.1923098289. The cubic root of 6618341899 is about 1877.5134906238.

The spelling of 6618341899 in words is "six billion, six hundred eighteen million, three hundred forty-one thousand, eight hundred ninety-nine".