1816141 has 2 divisors, whose sum is σ = 1816142. Its totient is φ = 1816140.

The previous prime is 1816121. The next prime is 1816147. The reversal of 1816141 is 1416181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1755625 + 60516 = 1325^2 + 246^2 .

It is a cyclic number.

It is not a de Polignac number, because 1816141 - 2⁹ = 1815629 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1816147) 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 as a sum of consecutive naturals, namely, 908070 + 908071.

It is an arithmetic number, because the mean of its divisors is an integer number (908071).

2^1816141 is an apocalyptic number.

It is an amenable number.

1816141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1816141 is an equidigital number, since it uses as much as digits as its factorization.

1816141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 22.

The square root of 1816141 is about 1347.6427568165. The cubic root of 1816141 is about 122.0065615032.

The spelling of 1816141 in words is "one million, eight hundred sixteen thousand, one hundred forty-one".