13878101 has 2 divisors, whose sum is σ = 13878102. Its totient is φ = 13878100.

The previous prime is 13878091. The next prime is 13878119. The reversal of 13878101 is 10187831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8994001 + 4884100 = 2999^2 + 2210^2 .

It is a cyclic number.

It is not a de Polignac number, because 13878101 - 2¹⁰ = 13877077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13878191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6939050 + 6939051.

It is an arithmetic number, because the mean of its divisors is an integer number (6939051).

Almost surely, 2^13878101 is an apocalyptic number.

It is an amenable number.

13878101 is a deficient number, since it is larger than the sum of its proper divisors (1).

13878101 is an equidigital number, since it uses as much as digits as its factorization.

13878101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 13878101 is about 3725.3323341683. The cubic root of 13878101 is about 240.3126769518.

The spelling of 13878101 in words is "thirteen million, eight hundred seventy-eight thousand, one hundred one".