11903819081 has 16 divisors (see below), whose sum is σ = 15019941888. Its totient is φ = 9163942800.

The previous prime is 11903819063. The next prime is 11903819087. The reversal of 11903819081 is 18091830911.

11903819081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11903819081 - 2²⁶ = 11836710217 is a prime.

It is a super-2 number, since 2×11903819081² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11903819087) 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 15 ways as a sum of consecutive naturals, for example, 924905 + ... + 937686.

It is an arithmetic number, because the mean of its divisors is an integer number (938746368).

Almost surely, 2^11903819081 is an apocalyptic number.

11903819081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11903819081 is a deficient number, since it is larger than the sum of its proper divisors (3116122807).

11903819081 is a wasteful number, since it uses less digits than its factorization.

11903819081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862692.

The product of its (nonzero) digits is 15552, while the sum is 41.

The spelling of 11903819081 in words is "eleven billion, nine hundred three million, eight hundred nineteen thousand, eighty-one".