3218778673 has 8 divisors (see below), whose sum is σ = 3512359296. Its totient is φ = 2925358800.

The previous prime is 3218778649. The next prime is 3218778683. The reversal of 3218778673 is 3768778123.

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 3218778673 - 2⁹ = 3218778161 is a prime.

It is a super-2 number, since 2×3218778673² = 20721072291519281858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3218778673.

It is not an unprimeable number, because it can be changed into a prime (3218778683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3783 + ... + 80323.

It is an arithmetic number, because the mean of its divisors is an integer number (439044912).

Almost surely, 2^3218778673 is an apocalyptic number.

It is an amenable number.

3218778673 is a deficient number, since it is larger than the sum of its proper divisors (293580623).

3218778673 is a wasteful number, since it uses less digits than its factorization.

3218778673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80375.

The product of its digits is 2370816, while the sum is 52.

The square root of 3218778673 is about 56734.2812856566. The cubic root of 3218778673 is about 1476.4895301270.

The spelling of 3218778673 in words is "three billion, two hundred eighteen million, seven hundred seventy-eight thousand, six hundred seventy-three".