185144101 has 2 divisors, whose sum is σ = 185144102. Its totient is φ = 185144100.

The previous prime is 185144087. The next prime is 185144107. The reversal of 185144101 is 101441581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172291876 + 12852225 = 13126^2 + 3585^2 .

It is a cyclic number.

It is not a de Polignac number, because 185144101 - 2⁹ = 185143589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (185144107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92572050 + 92572051.

It is an arithmetic number, because the mean of its divisors is an integer number (92572051).

Almost surely, 2^185144101 is an apocalyptic number.

It is an amenable number.

185144101 is a deficient number, since it is larger than the sum of its proper divisors (1).

185144101 is an equidigital number, since it uses as much as digits as its factorization.

185144101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 185144101 is about 13606.7667357091. The cubic root of 185144101 is about 569.9498273269.

Adding to 185144101 its reverse (101441581), we get a palindrome (286585682).

The spelling of 185144101 in words is "one hundred eighty-five million, one hundred forty-four thousand, one hundred one".