85858163 has 2 divisors, whose sum is σ = 85858164. Its totient is φ = 85858162.

The previous prime is 85858153. The next prime is 85858187. The reversal of 85858163 is 36185858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85858163 - 2⁸ = 85857907 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (85858153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42929081 + 42929082.

It is an arithmetic number, because the mean of its divisors is an integer number (42929082).

Almost surely, 2^85858163 is an apocalyptic number.

85858163 is a deficient number, since it is larger than the sum of its proper divisors (1).

85858163 is an equidigital number, since it uses as much as digits as its factorization.

85858163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230400, while the sum is 44.

The square root of 85858163 is about 9265.9680012398. The cubic root of 85858163 is about 441.1577002276.

The spelling of 85858163 in words is "eighty-five million, eight hundred fifty-eight thousand, one hundred sixty-three".