6814351409 has 4 divisors (see below), whose sum is σ = 6814530660. Its totient is φ = 6814172160.

The previous prime is 6814351399. The next prime is 6814351421. The reversal of 6814351409 is 9041534186.

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 6021760000 + 792591409 = 77600^2 + 28153^2 .

It is a cyclic number.

It is not a de Polignac number, because 6814351409 - 2⁸ = 6814351153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6814351469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7544 + ... + 116985.

It is an arithmetic number, because the mean of its divisors is an integer number (1703632665).

Almost surely, 2^6814351409 is an apocalyptic number.

It is an amenable number.

6814351409 is a deficient number, since it is larger than the sum of its proper divisors (179251).

6814351409 is a wasteful number, since it uses less digits than its factorization.

6814351409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179250.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 6814351409 is about 82549.0848465324. The cubic root of 6814351409 is about 1895.8683450847.

The spelling of 6814351409 in words is "six billion, eight hundred fourteen million, three hundred fifty-one thousand, four hundred nine".