385500851 has 2 divisors, whose sum is σ = 385500852. Its totient is φ = 385500850.

The previous prime is 385500833. The next prime is 385500877. The reversal of 385500851 is 158005583.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385500851 is a prime.

It is a super-3 number, since 3×385500851³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (385500811) 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, 192750425 + 192750426.

It is an arithmetic number, because the mean of its divisors is an integer number (192750426).

Almost surely, 2^385500851 is an apocalyptic number.

385500851 is a deficient number, since it is larger than the sum of its proper divisors (1).

385500851 is an equidigital number, since it uses as much as digits as its factorization.

385500851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 385500851 is about 19634.1755874801. The cubic root of 385500851 is about 727.7939600016.

The spelling of 385500851 in words is "three hundred eighty-five million, five hundred thousand, eight hundred fifty-one".