185485147 has 4 divisors (see below), whose sum is σ = 196396056. Its totient is φ = 174574240.

The previous prime is 185485141. The next prime is 185485169. The reversal of 185485147 is 741584581.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 741584581 = 131 ⋅5660951.

It is a cyclic number.

It is not a de Polignac number, because 185485147 - 2¹¹ = 185483099 is a prime.

It is a super-2 number, since 2×185485147² = 68809479515223218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (185485141) 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, 5455429 + ... + 5455462.

It is an arithmetic number, because the mean of its divisors is an integer number (49099014).

Almost surely, 2^185485147 is an apocalyptic number.

185485147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

185485147 is a deficient number, since it is larger than the sum of its proper divisors (10910909).

185485147 is a wasteful number, since it uses less digits than its factorization.

185485147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10910908.

The product of its digits is 179200, while the sum is 43.

The square root of 185485147 is about 13619.2931901769. The cubic root of 185485147 is about 570.2995727005.

The spelling of 185485147 in words is "one hundred eighty-five million, four hundred eighty-five thousand, one hundred forty-seven".