185413161 has 4 divisors (see below), whose sum is σ = 247217552. Its totient is φ = 123608772.

The previous prime is 185413157. The next prime is 185413181. The reversal of 185413161 is 161314581.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 185413161 - 2² = 185413157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (185413121) 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, 30902191 + ... + 30902196.

It is an arithmetic number, because the mean of its divisors is an integer number (61804388).

Almost surely, 2^185413161 is an apocalyptic number.

It is an amenable number.

185413161 is a deficient number, since it is larger than the sum of its proper divisors (61804391).

185413161 is an equidigital number, since it uses as much as digits as its factorization.

185413161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61804390.

The product of its digits is 2880, while the sum is 30.

The square root of 185413161 is about 13616.6501387089. The cubic root of 185413161 is about 570.2257862047.

The spelling of 185413161 in words is "one hundred eighty-five million, four hundred thirteen thousand, one hundred sixty-one".