385646085593 has 4 divisors (see below), whose sum is σ = 385919788980. Its totient is φ = 385372382208.

The previous prime is 385646085551. The next prime is 385646085613. The reversal of 385646085593 is 395580646583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 395580646583 = 17 ⋅23269449799.

It can be written as a sum of positive squares in 2 ways, for example, as 25450459024 + 360195626569 = 159532^2 + 600163^2 .

It is a cyclic number.

It is not a de Polignac number, because 385646085593 - 2¹⁴ = 385646069209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385646088593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136849580 + ... + 136852397.

It is an arithmetic number, because the mean of its divisors is an integer number (96479947245).

Almost surely, 2^385646085593 is an apocalyptic number.

It is an amenable number.

385646085593 is a deficient number, since it is larger than the sum of its proper divisors (273703387).

385646085593 is a wasteful number, since it uses less digits than its factorization.

385646085593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273703386.

The product of its (nonzero) digits is 93312000, while the sum is 62.

The spelling of 385646085593 in words is "three hundred eighty-five billion, six hundred forty-six million, eighty-five thousand, five hundred ninety-three".