845151887 has 2 divisors, whose sum is σ = 845151888. Its totient is φ = 845151886.

The previous prime is 845151841. The next prime is 845151913. The reversal of 845151887 is 788151548.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 845151887 - 2¹⁰ = 845150863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (845151187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422575943 + 422575944.

It is an arithmetic number, because the mean of its divisors is an integer number (422575944).

Almost surely, 2^845151887 is an apocalyptic number.

845151887 is a deficient number, since it is larger than the sum of its proper divisors (1).

845151887 is an equidigital number, since it uses as much as digits as its factorization.

845151887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 358400, while the sum is 47.

The square root of 845151887 is about 29071.4961259306. The cubic root of 845151887 is about 945.4638361998.

The spelling of 845151887 in words is "eight hundred forty-five million, one hundred fifty-one thousand, eight hundred eighty-seven".