2851684393 has 2 divisors, whose sum is σ = 2851684394. Its totient is φ = 2851684392.

The previous prime is 2851684391. The next prime is 2851684403. The reversal of 2851684393 is 3934861582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2790797584 + 60886809 = 52828^2 + 7803^2 .

It is a cyclic number.

It is not a de Polignac number, because 2851684393 - 2¹ = 2851684391 is a prime.

Together with 2851684391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2851684391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425842196 + 1425842197.

It is an arithmetic number, because the mean of its divisors is an integer number (1425842197).

Almost surely, 2^2851684393 is an apocalyptic number.

It is an amenable number.

2851684393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2851684393 is an equidigital number, since it uses as much as digits as its factorization.

2851684393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 49.

The square root of 2851684393 is about 53401.1647157625. The cubic root of 2851684393 is about 1418.0791977280.

The spelling of 2851684393 in words is "two billion, eight hundred fifty-one million, six hundred eighty-four thousand, three hundred ninety-three".