1144866181 has 2 divisors, whose sum is σ = 1144866182. Its totient is φ = 1144866180.

The previous prime is 1144866161. The next prime is 1144866187. The reversal of 1144866181 is 1816684411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 575280225 + 569585956 = 23985^2 + 23866^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144866181 - 2²¹ = 1142769029 is a prime.

It is a super-2 number, since 2×1144866181² = 2621437144795049522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1144866187) 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, 572433090 + 572433091.

It is an arithmetic number, because the mean of its divisors is an integer number (572433091).

Almost surely, 2^1144866181 is an apocalyptic number.

It is an amenable number.

1144866181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144866181 is an equidigital number, since it uses as much as digits as its factorization.

1144866181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 40.

The square root of 1144866181 is about 33835.8712168019. The cubic root of 1144866181 is about 1046.1281989067.

The spelling of 1144866181 in words is "one billion, one hundred forty-four million, eight hundred sixty-six thousand, one hundred eighty-one".