13816081 has 2 divisors, whose sum is σ = 13816082. Its totient is φ = 13816080.

The previous prime is 13816079. The next prime is 13816163. The reversal of 13816081 is 18061831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8503056 + 5313025 = 2916^2 + 2305^2 .

It is a cyclic number.

It is not a de Polignac number, because 13816081 - 2¹ = 13816079 is a prime.

It is a super-2 number, since 2×13816081² = 381768188397122, which contains 22 as substring.

Together with 13816079, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13816051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6908040 + 6908041.

It is an arithmetic number, because the mean of its divisors is an integer number (6908041).

Almost surely, 2^13816081 is an apocalyptic number.

It is an amenable number.

13816081 is a deficient number, since it is larger than the sum of its proper divisors (1).

13816081 is an equidigital number, since it uses as much as digits as its factorization.

13816081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 13816081 is about 3716.9989238632. The cubic root of 13816081 is about 239.9541637002.

The spelling of 13816081 in words is "thirteen million, eight hundred sixteen thousand, eighty-one".