385645885 has 4 divisors (see below), whose sum is σ = 462775068. Its totient is φ = 308516704.

The previous prime is 385645879. The next prime is 385645913. The reversal of 385645885 is 588546583.

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 105719524 + 279926361 = 10282^2 + 16731^2 .

It is a cyclic number.

It is not a de Polignac number, because 385645885 - 2¹¹ = 385643837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38564584 + ... + 38564593.

It is an arithmetic number, because the mean of its divisors is an integer number (115693767).

Almost surely, 2^385645885 is an apocalyptic number.

It is an amenable number.

385645885 is a deficient number, since it is larger than the sum of its proper divisors (77129183).

385645885 is an equidigital number, since it uses as much as digits as its factorization.

385645885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77129182.

The product of its digits is 4608000, while the sum is 52.

The square root of 385645885 is about 19637.8686470808. The cubic root of 385645885 is about 727.8852193199.

The spelling of 385645885 in words is "three hundred eighty-five million, six hundred forty-five thousand, eight hundred eighty-five".