845151841 has 2 divisors, whose sum is σ = 845151842. Its totient is φ = 845151840.

The previous prime is 845151781. The next prime is 845151887. The reversal of 845151841 is 148151548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 598536225 + 246615616 = 24465^2 + 15704^2 .

It is a cyclic number.

It is not a de Polignac number, because 845151841 - 2¹⁷ = 845020769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 845151841.

It is not a weakly prime, because it can be changed into another prime (845151641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422575920 + 422575921.

It is an arithmetic number, because the mean of its divisors is an integer number (422575921).

Almost surely, 2^845151841 is an apocalyptic number.

It is an amenable number.

845151841 is a deficient number, since it is larger than the sum of its proper divisors (1).

845151841 is an equidigital number, since it uses as much as digits as its factorization.

845151841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25600, while the sum is 37.

The square root of 845151841 is about 29071.4953347777. The cubic root of 845151841 is about 945.4638190465.

The spelling of 845151841 in words is "eight hundred forty-five million, one hundred fifty-one thousand, eight hundred forty-one".