11916481 has 2 divisors, whose sum is σ = 11916482. Its totient is φ = 11916480.

The previous prime is 11916449. The next prime is 11916491. The reversal of 11916481 is 18461911.

11916481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7952400 + 3964081 = 2820^2 + 1991^2 .

It is a cyclic number.

It is not a de Polignac number, because 11916481 - 2⁵ = 11916449 is a prime.

It is a super-2 number, since 2×11916481² = 284005038846722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11916491) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5958240 + 5958241.

It is an arithmetic number, because the mean of its divisors is an integer number (5958241).

Almost surely, 2^11916481 is an apocalyptic number.

It is an amenable number.

11916481 is a deficient number, since it is larger than the sum of its proper divisors (1).

11916481 is an equidigital number, since it uses as much as digits as its factorization.

11916481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 31.

The square root of 11916481 is about 3452.0256372165. The cubic root of 11916481 is about 228.4104704424.

The spelling of 11916481 in words is "eleven million, nine hundred sixteen thousand, four hundred eighty-one".