385500853 has 4 divisors (see below), whose sum is σ = 392774508. Its totient is φ = 378227200.

The previous prime is 385500851. The next prime is 385500877. The reversal of 385500853 is 358005583.

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

It can be written as a sum of positive squares in 2 ways, for example, as 237683889 + 147816964 = 15417^2 + 12158^2 .

It is a cyclic number.

It is not a de Polignac number, because 385500853 - 2¹ = 385500851 is a prime.

It is a super-2 number, since 2×385500853² = 297221815327455218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385500851) 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 in 3 ways as a sum of consecutive naturals, for example, 3636748 + ... + 3636853.

It is an arithmetic number, because the mean of its divisors is an integer number (98193627).

Almost surely, 2^385500853 is an apocalyptic number.

It is an amenable number.

385500853 is a deficient number, since it is larger than the sum of its proper divisors (7273655).

385500853 is an equidigital number, since it uses as much as digits as its factorization.

385500853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7273654.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 385500853 is about 19634.1756384117. The cubic root of 385500853 is about 727.7939612603.

The spelling of 385500853 in words is "three hundred eighty-five million, five hundred thousand, eight hundred fifty-three".