6815458481 has 4 divisors (see below), whose sum is σ = 7339724532. Its totient is φ = 6291192432.

The previous prime is 6815458427. The next prime is 6815458493. The reversal of 6815458481 is 1848545186.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2172398881 + 4643059600 = 46609^2 + 68140^2 .

It is a cyclic number.

It is not a de Polignac number, because 6815458481 - 2¹⁴ = 6815442097 is a prime.

It is a super-2 number, since 2×6815458481² = 92900948612469654722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6815458421) 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, 262133006 + ... + 262133031.

It is an arithmetic number, because the mean of its divisors is an integer number (1834931133).

Almost surely, 2^6815458481 is an apocalyptic number.

It is an amenable number.

6815458481 is a deficient number, since it is larger than the sum of its proper divisors (524266051).

6815458481 is a wasteful number, since it uses less digits than its factorization.

6815458481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524266050.

The product of its digits is 1228800, while the sum is 50.

The square root of 6815458481 is about 82555.7901118995. The cubic root of 6815458481 is about 1895.9710082722.

The spelling of 6815458481 in words is "six billion, eight hundred fifteen million, four hundred fifty-eight thousand, four hundred eighty-one".