385035530581 has 6 divisors (see below), whose sum is σ = 416931965250. Its totient is φ = 355417412688.

The previous prime is 385035530527. The next prime is 385035530591. The reversal of 385035530581 is 185035530583.

It can be written as a sum of positive squares in 3 ways, for example, as 20057640625 + 364977889956 = 141625^2 + 604134^2 .

It is not a de Polignac number, because 385035530581 - 2¹¹ = 385035528533 is a prime.

It is a super-2 number, since 2×385035530581² (a number of 24 digits) 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 (385035530591) 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 5 ways as a sum of consecutive naturals, for example, 1139158206 + ... + 1139158543.

It is an arithmetic number, because the mean of its divisors is an integer number (69488660875).

Almost surely, 2^385035530581 is an apocalyptic number.

It is an amenable number.

385035530581 is a deficient number, since it is larger than the sum of its proper divisors (31896434669).

385035530581 is a wasteful number, since it uses less digits than its factorization.

385035530581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278316775 (or 2278316762 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 385035530581 in words is "three hundred eighty-five billion, thirty-five million, five hundred thirty thousand, five hundred eighty-one".