1840040220013 has 2 divisors, whose sum is σ = 1840040220014. Its totient is φ = 1840040220012.

The previous prime is 1840040219981. The next prime is 1840040220079. The reversal of 1840040220013 is 3100220400481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1093659991524 + 746380228489 = 1045782^2 + 863933^2 .

It is an emirp because it is prime and its reverse (3100220400481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1840040220013 - 2⁵ = 1840040219981 is a prime.

It is a super-2 number, since 2×1840040220013² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1840040220013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1840040220913) 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 as a sum of consecutive naturals, namely, 920020110006 + 920020110007.

It is an arithmetic number, because the mean of its divisors is an integer number (920020110007).

Almost surely, 2^{1840040220013} is an apocalyptic number.

It is an amenable number.

1840040220013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840040220013 is an equidigital number, since it uses as much as digits as its factorization.

1840040220013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1840040220013 its reverse (3100220400481), we get a palindrome (4940260620494).

The spelling of 1840040220013 in words is "one trillion, eight hundred forty billion, forty million, two hundred twenty thousand, thirteen".