814851893 has 2 divisors, whose sum is σ = 814851894. Its totient is φ = 814851892.

The previous prime is 814851887. The next prime is 814851901. The reversal of 814851893 is 398158418.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 734247409 + 80604484 = 27097^2 + 8978^2 .

It is a cyclic number.

It is not a de Polignac number, because 814851893 - 2⁸ = 814851637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (814851853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407425946 + 407425947.

It is an arithmetic number, because the mean of its divisors is an integer number (407425947).

Almost surely, 2^814851893 is an apocalyptic number.

It is an amenable number.

814851893 is a deficient number, since it is larger than the sum of its proper divisors (1).

814851893 is an equidigital number, since it uses as much as digits as its factorization.

814851893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 47.

The square root of 814851893 is about 28545.6107484145. The cubic root of 814851893 is about 934.0272774399.

The spelling of 814851893 in words is "eight hundred fourteen million, eight hundred fifty-one thousand, eight hundred ninety-three".