11191943 has 12 divisors (see below), whose sum is σ = 13206672. Its totient is φ = 9455040.

The previous prime is 11191937. The next prime is 11191951. The reversal of 11191943 is 34919111.

11191943 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 11191943 - 2¹⁶ = 11126407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11191903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1871 + ... + 5087.

It is an arithmetic number, because the mean of its divisors is an integer number (1100556).

Almost surely, 2^11191943 is an apocalyptic number.

11191943 is a deficient number, since it is larger than the sum of its proper divisors (2014729).

11191943 is an equidigital number, since it uses as much as digits as its factorization.

11191943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302 (or 3295 counting only the distinct ones).

The product of its digits is 972, while the sum is 29.

The square root of 11191943 is about 3345.4361449593. The cubic root of 11191943 is about 223.6841250890.

The spelling of 11191943 in words is "eleven million, one hundred ninety-one thousand, nine hundred forty-three".