1330018181 has 2 divisors, whose sum is σ = 1330018182. Its totient is φ = 1330018180.

The previous prime is 1330018153. The next prime is 1330018187. The reversal of 1330018181 is 1818100331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 890067556 + 439950625 = 29834^2 + 20975^2 .

It is an emirp because it is prime and its reverse (1818100331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1330018181 - 2¹⁴ = 1330001797 is a prime.

It is a super-2 number, since 2×1330018181² = 3537896723581097522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1330018181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330018187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665009090 + 665009091.

It is an arithmetic number, because the mean of its divisors is an integer number (665009091).

Almost surely, 2^1330018181 is an apocalyptic number.

It is an amenable number.

1330018181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330018181 is an equidigital number, since it uses as much as digits as its factorization.

1330018181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 1330018181 is about 36469.4143221412. The cubic root of 1330018181 is about 1099.7294599136.

The spelling of 1330018181 in words is "one billion, three hundred thirty million, eighteen thousand, one hundred eighty-one".