13681469 has 2 divisors, whose sum is σ = 13681470. Its totient is φ = 13681468.

The previous prime is 13681433. The next prime is 13681483. The reversal of 13681469 is 96418631.

13681469 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., 9375844 + 4305625 = 3062^2 + 2075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13681469 is a prime.

It is a super-2 number, since 2×13681469² = 374365187995922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13681429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6840734 + 6840735.

It is an arithmetic number, because the mean of its divisors is an integer number (6840735).

Almost surely, 2^13681469 is an apocalyptic number.

It is an amenable number.

13681469 is a deficient number, since it is larger than the sum of its proper divisors (1).

13681469 is an equidigital number, since it uses as much as digits as its factorization.

13681469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 13681469 is about 3698.8469825068. The cubic root of 13681469 is about 239.1723166901.

The spelling of 13681469 in words is "thirteen million, six hundred eighty-one thousand, four hundred sixty-nine".