185744161 has 2 divisors, whose sum is σ = 185744162. Its totient is φ = 185744160.

The previous prime is 185744131. The next prime is 185744173. The reversal of 185744161 is 161447581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169390225 + 16353936 = 13015^2 + 4044^2 .

It is a cyclic number.

It is not a de Polignac number, because 185744161 - 2⁵ = 185744129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 185744161.

It is not a weakly prime, because it can be changed into another prime (185744131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92872080 + 92872081.

It is an arithmetic number, because the mean of its divisors is an integer number (92872081).

Almost surely, 2^185744161 is an apocalyptic number.

It is an amenable number.

185744161 is a deficient number, since it is larger than the sum of its proper divisors (1).

185744161 is an equidigital number, since it uses as much as digits as its factorization.

185744161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 37.

The square root of 185744161 is about 13628.7989566212. The cubic root of 185744161 is about 570.5649072783.

The spelling of 185744161 in words is "one hundred eighty-five million, seven hundred forty-four thousand, one hundred sixty-one".