858803081 has 2 divisors, whose sum is σ = 858803082. Its totient is φ = 858803080.

The previous prime is 858803063. The next prime is 858803089. The reversal of 858803081 is 180308858.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 845879056 + 12924025 = 29084^2 + 3595^2 .

It is a cyclic number.

It is not a de Polignac number, because 858803081 - 2¹⁰ = 858802057 is a prime.

It is a super-2 number, since 2×858803081² = 1475085463870185122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (858803089) 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, 429401540 + 429401541.

It is an arithmetic number, because the mean of its divisors is an integer number (429401541).

Almost surely, 2^858803081 is an apocalyptic number.

It is an amenable number.

858803081 is a deficient number, since it is larger than the sum of its proper divisors (1).

858803081 is an equidigital number, since it uses as much as digits as its factorization.

858803081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61440, while the sum is 41.

The square root of 858803081 is about 29305.3421921669. The cubic root of 858803081 is about 950.5271611604.

The spelling of 858803081 in words is "eight hundred fifty-eight million, eight hundred three thousand, eighty-one".