485140185 has 80 divisors (see below), whose sum is σ = 899078400. Its totient is φ = 250159104.

The previous prime is 485140181. The next prime is 485140193. The reversal of 485140185 is 581041584.

It is not a de Polignac number, because 485140185 - 2² = 485140181 is a prime.

It is not an unprimeable number, because it can be changed into a prime (485140181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1887577 + ... + 1887833.

It is an arithmetic number, because the mean of its divisors is an integer number (11238480).

Almost surely, 2^485140185 is an apocalyptic number.

485140185 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

485140185 is a deficient number, since it is larger than the sum of its proper divisors (413938215).

485140185 is a wasteful number, since it uses less digits than its factorization.

485140185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 485140185 is about 22025.8980520659. The cubic root of 485140185 is about 785.7584917356.

The spelling of 485140185 in words is "four hundred eighty-five million, one hundred forty thousand, one hundred eighty-five".