385818559 has 4 divisors (see below), whose sum is σ = 440935504. Its totient is φ = 330701616.

The previous prime is 385818527. The next prime is 385818571. The reversal of 385818559 is 955818583.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 385818559 - 2⁵ = 385818527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385818509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27558462 + ... + 27558475.

It is an arithmetic number, because the mean of its divisors is an integer number (110233876).

Almost surely, 2^385818559 is an apocalyptic number.

385818559 is a deficient number, since it is larger than the sum of its proper divisors (55116945).

385818559 is an equidigital number, since it uses as much as digits as its factorization.

385818559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55116944.

The product of its digits is 1728000, while the sum is 52.

The square root of 385818559 is about 19642.2646097643. The cubic root of 385818559 is about 727.9938406424.

The spelling of 385818559 in words is "three hundred eighty-five million, eight hundred eighteen thousand, five hundred fifty-nine".