1066903813 has 4 divisors (see below), whose sum is σ = 1074579520. Its totient is φ = 1059228108.

The previous prime is 1066903811. The next prime is 1066903837. The reversal of 1066903813 is 3183096601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1066903813 - 2¹ = 1066903811 is a prime.

It is a super-2 number, since 2×1066903813² = 2276567492387877938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066903811) 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 in 3 ways as a sum of consecutive naturals, for example, 3837645 + ... + 3837922.

It is an arithmetic number, because the mean of its divisors is an integer number (268644880).

Almost surely, 2^1066903813 is an apocalyptic number.

It is an amenable number.

1066903813 is a deficient number, since it is larger than the sum of its proper divisors (7675707).

1066903813 is an equidigital number, since it uses as much as digits as its factorization.

1066903813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7675706.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 1066903813 is about 32663.4935822854. The cubic root of 1066903813 is about 1021.8216240273.

The spelling of 1066903813 in words is "one billion, sixty-six million, nine hundred three thousand, eight hundred thirteen".