185305147 has 4 divisors (see below), whose sum is σ = 185677000. Its totient is φ = 184933296.

The previous prime is 185305091. The next prime is 185305163. The reversal of 185305147 is 741503581.

It is a happy number.

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 185305147 - 2¹⁵ = 185272379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (185305177) 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, 185178 + ... + 186175.

It is an arithmetic number, because the mean of its divisors is an integer number (46419250).

Almost surely, 2^185305147 is an apocalyptic number.

185305147 is a deficient number, since it is larger than the sum of its proper divisors (371853).

185305147 is an equidigital number, since it uses as much as digits as its factorization.

185305147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371852.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 185305147 is about 13612.6833137336. The cubic root of 185305147 is about 570.1150347492.

The spelling of 185305147 in words is "one hundred eighty-five million, three hundred five thousand, one hundred forty-seven".