13668019 has 8 divisors (see below), whose sum is σ = 14182560. Its totient is φ = 13156416.

The previous prime is 13668007. The next prime is 13668029. The reversal of 13668019 is 91086631.

13668019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13668019 - 2⁵ = 13667987 is a prime.

It is a super-2 number, since 2×13668019² = 373629486768722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13668029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14119 + ... + 15055.

It is an arithmetic number, because the mean of its divisors is an integer number (1772820).

Almost surely, 2^13668019 is an apocalyptic number.

13668019 is a deficient number, since it is larger than the sum of its proper divisors (514541).

13668019 is an equidigital number, since it uses as much as digits as its factorization.

13668019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 13668019 is about 3697.0284012975. The cubic root of 13668019 is about 239.0939156943.

The spelling of 13668019 in words is "thirteen million, six hundred sixty-eight thousand, nineteen".