385378785309 has 8 divisors (see below), whose sum is σ = 587243863360. Its totient is φ = 220216448736.

The previous prime is 385378785301. The next prime is 385378785347. The reversal of 385378785309 is 903587873583.

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

It is not a de Polignac number, because 385378785309 - 2³ = 385378785301 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 385378785309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385378785301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9175685344 + ... + 9175685385.

It is an arithmetic number, because the mean of its divisors is an integer number (73405482920).

Almost surely, 2^385378785309 is an apocalyptic number.

It is an amenable number.

385378785309 is a deficient number, since it is larger than the sum of its proper divisors (201865078051).

385378785309 is a wasteful number, since it uses less digits than its factorization.

385378785309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18351370739.

The product of its (nonzero) digits is 152409600, while the sum is 66.

The spelling of 385378785309 in words is "three hundred eighty-five billion, three hundred seventy-eight million, seven hundred eighty-five thousand, three hundred nine".