854865013 has 2 divisors, whose sum is σ = 854865014. Its totient is φ = 854865012.

The previous prime is 854864957. The next prime is 854865017. The reversal of 854865013 is 310568458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 845762724 + 9102289 = 29082^2 + 3017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-854865013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (854865017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427432506 + 427432507.

It is an arithmetic number, because the mean of its divisors is an integer number (427432507).

Almost surely, 2^854865013 is an apocalyptic number.

It is an amenable number.

854865013 is a deficient number, since it is larger than the sum of its proper divisors (1).

854865013 is an equidigital number, since it uses as much as digits as its factorization.

854865013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 854865013 is about 29238.0747143173. The cubic root of 854865013 is about 949.0720441952.

The spelling of 854865013 in words is "eight hundred fifty-four million, eight hundred sixty-five thousand, thirteen".