1814180161 has 2 divisors, whose sum is σ = 1814180162. Its totient is φ = 1814180160.

The previous prime is 1814180153. The next prime is 1814180197. The reversal of 1814180161 is 1610814181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1605204225 + 208975936 = 40065^2 + 14456^2 .

It is an emirp because it is prime and its reverse (1610814181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1814180161 - 2³ = 1814180153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1814180261) 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, 907090080 + 907090081.

It is an arithmetic number, because the mean of its divisors is an integer number (907090081).

Almost surely, 2^1814180161 is an apocalyptic number.

It is an amenable number.

1814180161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1814180161 is an equidigital number, since it uses as much as digits as its factorization.

1814180161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 31.

The square root of 1814180161 is about 42593.1938342266. The cubic root of 1814180161 is about 1219.6263661444.

The spelling of 1814180161 in words is "one billion, eight hundred fourteen million, one hundred eighty thousand, one hundred sixty-one".