73185163 has 4 divisors (see below), whose sum is σ = 73204488. Its totient is φ = 73165840.

The previous prime is 73185143. The next prime is 73185173. The reversal of 73185163 is 36158137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36158137 = 53 ⋅682229.

It is a cyclic number.

It is not a de Polignac number, because 73185163 - 2⁹ = 73184651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73185113) 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, 1906 + ... + 12247.

It is an arithmetic number, because the mean of its divisors is an integer number (18301122).

Almost surely, 2^73185163 is an apocalyptic number.

73185163 is a deficient number, since it is larger than the sum of its proper divisors (19325).

73185163 is a wasteful number, since it uses less digits than its factorization.

73185163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19324.

The product of its digits is 15120, while the sum is 34.

The square root of 73185163 is about 8554.8327277627. The cubic root of 73185163 is about 418.2869815612.

The spelling of 73185163 in words is "seventy-three million, one hundred eighty-five thousand, one hundred sixty-three".