11043891903 has 16 divisors (see below), whose sum is σ = 16065789696. Its totient is φ = 6692456640.

The previous prime is 11043891889. The next prime is 11043891913. The reversal of 11043891903 is 30919834011.

It is a happy number.

11043891903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11043891903 - 2⁵ = 11043891871 is a prime.

It is a super-2 number, since 2×11043891903² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11043891913) 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, 365875 + ... + 394907.

It is an arithmetic number, because the mean of its divisors is an integer number (1004111856).

Almost surely, 2^11043891903 is an apocalyptic number.

11043891903 is a deficient number, since it is larger than the sum of its proper divisors (5021897793).

11043891903 is a wasteful number, since it uses less digits than its factorization.

11043891903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40574.

The product of its (nonzero) digits is 23328, while the sum is 39.

The spelling of 11043891903 in words is "eleven billion, forty-three million, eight hundred ninety-one thousand, nine hundred three".