385261865 has 8 divisors (see below), whose sum is σ = 467509320. Its totient is φ = 304746112.

The previous prime is 385261843. The next prime is 385261873. The reversal of 385261865 is 568162583.

It can be written as a sum of positive squares in 4 ways, for example, as 73068304 + 312193561 = 8548^2 + 17669^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 385261865 - 2⁶ = 385261801 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432434 + ... + 433323.

It is an arithmetic number, because the mean of its divisors is an integer number (58438665).

Almost surely, 2^385261865 is an apocalyptic number.

It is an amenable number.

385261865 is a deficient number, since it is larger than the sum of its proper divisors (82247455).

385261865 is an equidigital number, since it uses as much as digits as its factorization.

385261865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865851.

The product of its digits is 345600, while the sum is 44.

The square root of 385261865 is about 19628.0886741425. The cubic root of 385261865 is about 727.6435335961.

The spelling of 385261865 in words is "three hundred eighty-five million, two hundred sixty-one thousand, eight hundred sixty-five".