11819408113 has 6 divisors (see below), whose sum is σ = 12241028774. Its totient is φ = 11411841504.

The previous prime is 11819408093. The next prime is 11819408123. The reversal of 11819408113 is 31180491811.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 876574449 + 10942833664 = 29607^2 + 104608^2 .

It is not a de Polignac number, because 11819408113 - 2²¹ = 11817310961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11819408123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7026156 + ... + 7027837.

Almost surely, 2^11819408113 is an apocalyptic number.

It is an amenable number.

11819408113 is a deficient number, since it is larger than the sum of its proper divisors (421620661).

11819408113 is an equidigital number, since it uses as much as digits as its factorization.

11819408113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14054051 (or 14054022 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 37.

Adding to 11819408113 its reverse (31180491811), we get a palindrome (42999899924).

The spelling of 11819408113 in words is "eleven billion, eight hundred nineteen million, four hundred eight thousand, one hundred thirteen".