1066618243 has 2 divisors, whose sum is σ = 1066618244. Its totient is φ = 1066618242.

The previous prime is 1066618237. The next prime is 1066618249. The reversal of 1066618243 is 3428166601.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1066618237) and next prime (1066618249).

It is an emirp because it is prime and its reverse (3428166601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1066618243 - 2⁵ = 1066618211 is a prime.

It is a super-2 number, since 2×1066618243² = 2275348952600814098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1066618249) 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, 533309121 + 533309122.

It is an arithmetic number, because the mean of its divisors is an integer number (533309122).

Almost surely, 2^1066618243 is an apocalyptic number.

1066618243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066618243 is an equidigital number, since it uses as much as digits as its factorization.

1066618243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 1066618243 is about 32659.1218957277. The cubic root of 1066618243 is about 1021.7304481605.

The spelling of 1066618243 in words is "one billion, sixty-six million, six hundred eighteen thousand, two hundred forty-three".