6819452581 has 8 divisors (see below), whose sum is σ = 6835602944. Its totient is φ = 6803319600.

The previous prime is 6819452561. The next prime is 6819452599. The reversal of 6819452581 is 1852549186.

6819452581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6819452581 - 2⁹ = 6819452069 is a prime.

It is a super-2 number, since 2×6819452581² = 93009867009015123122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6819452561) 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 7 ways as a sum of consecutive naturals, for example, 1079131 + ... + 1085431.

It is an arithmetic number, because the mean of its divisors is an integer number (854450368).

Almost surely, 2^6819452581 is an apocalyptic number.

It is an amenable number.

6819452581 is a deficient number, since it is larger than the sum of its proper divisors (16150363).

6819452581 is a wasteful number, since it uses less digits than its factorization.

6819452581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8691.

The product of its digits is 691200, while the sum is 49.

The square root of 6819452581 is about 82579.9768769646. The cubic root of 6819452581 is about 1896.3413046613.

The spelling of 6819452581 in words is "six billion, eight hundred nineteen million, four hundred fifty-two thousand, five hundred eighty-one".