385173653 has 4 divisors (see below), whose sum is σ = 391702080. Its totient is φ = 378645228.

The previous prime is 385173637. The next prime is 385173673. The reversal of 385173653 is 356371583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 356371583 = 13291 ⋅26813.

It is a cyclic number.

It is not a de Polignac number, because 385173653 - 2⁴ = 385173637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 385173653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385173673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3264125 + ... + 3264242.

It is an arithmetic number, because the mean of its divisors is an integer number (97925520).

Almost surely, 2^385173653 is an apocalyptic number.

It is an amenable number.

385173653 is a deficient number, since it is larger than the sum of its proper divisors (6528427).

385173653 is an equidigital number, since it uses as much as digits as its factorization.

385173653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6528426.

The product of its digits is 226800, while the sum is 41.

The square root of 385173653 is about 19625.8414596674. The cubic root of 385173653 is about 727.5879940642.

The spelling of 385173653 in words is "three hundred eighty-five million, one hundred seventy-three thousand, six hundred fifty-three".