11581941 has 16 divisors (see below), whose sum is σ = 18219008. Its totient is φ = 6404400.

The previous prime is 11581937. The next prime is 11581957. The reversal of 11581941 is 14918511.

It is a happy number.

11581941 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11581941 - 2² = 11581937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11581899 and 11581908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11581901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8245 + ... + 9546.

It is an arithmetic number, because the mean of its divisors is an integer number (1138688).

Almost surely, 2^11581941 is an apocalyptic number.

It is an amenable number.

11581941 is a deficient number, since it is larger than the sum of its proper divisors (6637067).

11581941 is a wasteful number, since it uses less digits than its factorization.

11581941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17832.

The product of its digits is 1440, while the sum is 30.

The square root of 11581941 is about 3403.2250880599. The cubic root of 11581941 is about 226.2527063360.

The spelling of 11581941 in words is "eleven million, five hundred eighty-one thousand, nine hundred forty-one".