11819408340 has 96 divisors (see below), whose sum is σ = 33641588736. Its totient is φ = 3099940480.

The previous prime is 11819408327. The next prime is 11819408357. The reversal of 11819408340 is 4380491811.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1884049 + ... + 1890311.

It is an arithmetic number, because the mean of its divisors is an integer number (350433216).

Almost surely, 2^11819408340 is an apocalyptic number.

11819408340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11819408340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16820794368).

11819408340 is an abundant number, since it is smaller than the sum of its proper divisors (21822180396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11819408340 is a wasteful number, since it uses less digits than its factorization.

11819408340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6789 (or 6787 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The spelling of 11819408340 in words is "eleven billion, eight hundred nineteen million, four hundred eight thousand, three hundred forty".