1066013381 has 2 divisors, whose sum is σ = 1066013382. Its totient is φ = 1066013380.

The previous prime is 1066013359. The next prime is 1066013447. The reversal of 1066013381 is 1833106601.

1066013381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1045228900 + 20784481 = 32330^2 + 4559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066013381 is a prime.

It is a super-3 number, since 3×1066013381³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066013881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533006690 + 533006691.

It is an arithmetic number, because the mean of its divisors is an integer number (533006691).

Almost surely, 2^1066013381 is an apocalyptic number.

It is an amenable number.

1066013381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066013381 is an equidigital number, since it uses as much as digits as its factorization.

1066013381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1066013381 is about 32649.8603519219. The cubic root of 1066013381 is about 1021.5372760225.

Adding to 1066013381 its reverse (1833106601), we get a palindrome (2899119982).

The spelling of 1066013381 in words is "one billion, sixty-six million, thirteen thousand, three hundred eighty-one".