185385383 has 4 divisors (see below), whose sum is σ = 185602560. Its totient is φ = 185168208.

The previous prime is 185385377. The next prime is 185385401. The reversal of 185385383 is 383583581.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 185385383 - 2¹⁶ = 185319847 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 (185385373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107303 + ... + 109016.

It is an arithmetic number, because the mean of its divisors is an integer number (46400640).

Almost surely, 2^185385383 is an apocalyptic number.

185385383 is a deficient number, since it is larger than the sum of its proper divisors (217177).

185385383 is an equidigital number, since it uses as much as digits as its factorization.

185385383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217176.

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

The square root of 185385383 is about 13615.6300992646. The cubic root of 185385383 is about 570.1973083216.

The spelling of 185385383 in words is "one hundred eighty-five million, three hundred eighty-five thousand, three hundred eighty-three".