11881843 has 2 divisors, whose sum is σ = 11881844. Its totient is φ = 11881842.

The previous prime is 11881829. The next prime is 11881853. The reversal of 11881843 is 34818811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11881843 - 2⁵ = 11881811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11881799 and 11881808.

It is not a weakly prime, because it can be changed into another prime (11881853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5940921 + 5940922.

It is an arithmetic number, because the mean of its divisors is an integer number (5940922).

Almost surely, 2^11881843 is an apocalyptic number.

11881843 is a deficient number, since it is larger than the sum of its proper divisors (1).

11881843 is an equidigital number, since it uses as much as digits as its factorization.

11881843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 34.

The square root of 11881843 is about 3447.0049318212. The cubic root of 11881843 is about 228.1889464318.

Subtracting from 11881843 its sum of digits (34), we obtain a square (11881809 = 3447²).

The spelling of 11881843 in words is "eleven million, eight hundred eighty-one thousand, eight hundred forty-three".