11001943 has 2 divisors, whose sum is σ = 11001944. Its totient is φ = 11001942.

The previous prime is 11001923. The next prime is 11001953. The reversal of 11001943 is 34910011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11001943 - 2⁵ = 11001911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11001943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11001923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500971 + 5500972.

It is an arithmetic number, because the mean of its divisors is an integer number (5500972).

Almost surely, 2^11001943 is an apocalyptic number.

11001943 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001943 is an equidigital number, since it uses as much as digits as its factorization.

11001943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 11001943 is about 3316.9176956928. The cubic root of 11001943 is about 222.4111028112.

Adding to 11001943 its reverse (34910011), we get a palindrome (45911954).

The spelling of 11001943 in words is "eleven million, one thousand, nine hundred forty-three".