11903334381 has 12 divisors (see below), whose sum is σ = 17200607008. Its totient is φ = 7932370824.

The previous prime is 11903334341. The next prime is 11903334407. The reversal of 11903334381 is 18343330911.

11903334381 is a `hidden beast` number, since 1 + 190 + 3 + 33 + 438 + 1 = 666.

It is not a de Polignac number, because 11903334381 - 2⁷ = 11903334253 is a prime.

It is a super-2 number, since 2×11903334381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11903334341) 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 11 ways as a sum of consecutive naturals, for example, 241675 + ... + 286728.

Almost surely, 2^11903334381 is an apocalyptic number.

It is an amenable number.

11903334381 is a deficient number, since it is larger than the sum of its proper divisors (5297272627).

11903334381 is a wasteful number, since it uses less digits than its factorization.

11903334381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530912 (or 530909 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 11903334381 in words is "eleven billion, nine hundred three million, three hundred thirty-four thousand, three hundred eighty-one".