851751013 has 2 divisors, whose sum is σ = 851751014. Its totient is φ = 851751012.

The previous prime is 851751007. The next prime is 851751031. The reversal of 851751013 is 310157158.

Together with next prime (851751031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 785849089 + 65901924 = 28033^2 + 8118^2 .

It is a cyclic number.

It is not a de Polignac number, because 851751013 - 2²⁵ = 818196581 is a prime.

It is a super-3 number, since 3×851751013³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (851751053) 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 as a sum of consecutive naturals, namely, 425875506 + 425875507.

It is an arithmetic number, because the mean of its divisors is an integer number (425875507).

Almost surely, 2^851751013 is an apocalyptic number.

It is an amenable number.

851751013 is a deficient number, since it is larger than the sum of its proper divisors (1).

851751013 is an equidigital number, since it uses as much as digits as its factorization.

851751013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 31.

The square root of 851751013 is about 29184.7736499703. The cubic root of 851751013 is about 947.9182533943.

The spelling of 851751013 in words is "eight hundred fifty-one million, seven hundred fifty-one thousand, thirteen".