6894815093 has 4 divisors (see below), whose sum is σ = 6911192748. Its totient is φ = 6878437440.

The previous prime is 6894815089. The next prime is 6894815113. The reversal of 6894815093 is 3905184986.

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 859545124 + 6035269969 = 29318^2 + 77687^2 .

It is a cyclic number.

It is not a de Polignac number, because 6894815093 - 2² = 6894815089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6894815023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8188196 + ... + 8189037.

It is an arithmetic number, because the mean of its divisors is an integer number (1727798187).

Almost surely, 2^6894815093 is an apocalyptic number.

It is an amenable number.

6894815093 is a deficient number, since it is larger than the sum of its proper divisors (16377655).

6894815093 is a wasteful number, since it uses less digits than its factorization.

6894815093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16377654.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The square root of 6894815093 is about 83035.0232913799. The cubic root of 6894815093 is about 1903.3012867593.

The spelling of 6894815093 in words is "six billion, eight hundred ninety-four million, eight hundred fifteen thousand, ninety-three".