13881611 has 2 divisors, whose sum is σ = 13881612. Its totient is φ = 13881610.

The previous prime is 13881589. The next prime is 13881613. The reversal of 13881611 is 11618831.

13881611 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 is a cyclic number.

It is not a de Polignac number, because 13881611 - 2¹⁴ = 13865227 is a prime.

Together with 13881613, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₉₀₂₉₁₈ and since 13881611 and 902918 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13881613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6940805 + 6940806.

It is an arithmetic number, because the mean of its divisors is an integer number (6940806).

Almost surely, 2^13881611 is an apocalyptic number.

13881611 is a deficient number, since it is larger than the sum of its proper divisors (1).

13881611 is an equidigital number, since it uses as much as digits as its factorization.

13881611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 29.

The square root of 13881611 is about 3725.8034032944. The cubic root of 13881611 is about 240.3329349203.

The spelling of 13881611 in words is "thirteen million, eight hundred eighty-one thousand, six hundred eleven".