1085185847 has 2 divisors, whose sum is σ = 1085185848. Its totient is φ = 1085185846.

The previous prime is 1085185831. The next prime is 1085185859. The reversal of 1085185847 is 7485815801.

It is a strong prime.

It is an emirp because it is prime and its reverse (7485815801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1085185847 - 2⁴ = 1085185831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1085184847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542592923 + 542592924.

It is an arithmetic number, because the mean of its divisors is an integer number (542592924).

Almost surely, 2^1085185847 is an apocalyptic number.

1085185847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085185847 is an equidigital number, since it uses as much as digits as its factorization.

1085185847 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1085185847 is about 32942.1591126022. The cubic root of 1085185847 is about 1027.6251083841.

The spelling of 1085185847 in words is "one billion, eighty-five million, one hundred eighty-five thousand, eight hundred forty-seven".