385882565 has 4 divisors (see below), whose sum is σ = 463059084. Its totient is φ = 308706048.

The previous prime is 385882561. The next prime is 385882573. The reversal of 385882565 is 565288583.

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 186677569 + 199204996 = 13663^2 + 14114^2 .

It is a cyclic number.

It is not a de Polignac number, because 385882565 - 2² = 385882561 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 (385882561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38588252 + ... + 38588261.

It is an arithmetic number, because the mean of its divisors is an integer number (115764771).

Almost surely, 2^385882565 is an apocalyptic number.

It is an amenable number.

385882565 is a deficient number, since it is larger than the sum of its proper divisors (77176519).

385882565 is an equidigital number, since it uses as much as digits as its factorization.

385882565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77176518.

The product of its digits is 2304000, while the sum is 50.

The square root of 385882565 is about 19643.8938349809. The cubic root of 385882565 is about 728.0340956589.

The spelling of 385882565 in words is "three hundred eighty-five million, eight hundred eighty-two thousand, five hundred sixty-five".