1818210011003 has 32 divisors (see below), whose sum is σ = 2032413768000. Its totient is φ = 1616455249920.

The previous prime is 1818210010879. The next prime is 1818210011021. The reversal of 1818210011003 is 3001100128181.

It is a cyclic number.

It is not a de Polignac number, because 1818210011003 - 2¹⁶ = 1818209945467 is a prime.

It is a super-2 number, since 2×1818210011003² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1818210011203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239581133 + ... + 239588721.

It is an arithmetic number, because the mean of its divisors is an integer number (63512930250).

Almost surely, 2^{1818210011003} is an apocalyptic number.

1818210011003 is a deficient number, since it is larger than the sum of its proper divisors (214203756997).

1818210011003 is a wasteful number, since it uses less digits than its factorization.

1818210011003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9695.

The product of its (nonzero) digits is 384, while the sum is 26.

Adding to 1818210011003 its reverse (3001100128181), we get a palindrome (4819310139184).

The spelling of 1818210011003 in words is "one trillion, eight hundred eighteen billion, two hundred ten million, eleven thousand, three".