13788881 has 2 divisors, whose sum is σ = 13788882. Its totient is φ = 13788880.

The previous prime is 13788877. The next prime is 13788911. The reversal of 13788881 is 18888731.

13788881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7075600 + 6713281 = 2660^2 + 2591^2 .

It is a cyclic number.

It is not a de Polignac number, because 13788881 - 2² = 13788877 is a prime.

It is a super-2 number, since 2×13788881² = 380266478464322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13788811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6894440 + 6894441.

It is an arithmetic number, because the mean of its divisors is an integer number (6894441).

Almost surely, 2^13788881 is an apocalyptic number.

It is an amenable number.

13788881 is a deficient number, since it is larger than the sum of its proper divisors (1).

13788881 is an equidigital number, since it uses as much as digits as its factorization.

13788881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 44.

The square root of 13788881 is about 3713.3382555323. The cubic root of 13788881 is about 239.7965927011.

The spelling of 13788881 in words is "thirteen million, seven hundred eighty-eight thousand, eight hundred eighty-one".