13938019 has 2 divisors, whose sum is σ = 13938020. Its totient is φ = 13938018.

The previous prime is 13937999. The next prime is 13938031. The reversal of 13938019 is 91083931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13938019 - 2¹⁵ = 13905251 is a prime.

It is a super-2 number, since 2×13938019² = 388536747288722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13938059) 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, 6969009 + 6969010.

It is an arithmetic number, because the mean of its divisors is an integer number (6969010).

Almost surely, 2^13938019 is an apocalyptic number.

13938019 is a deficient number, since it is larger than the sum of its proper divisors (1).

13938019 is an equidigital number, since it uses as much as digits as its factorization.

13938019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 13938019 is about 3733.3656397412. The cubic root of 13938019 is about 240.6580263658.

The spelling of 13938019 in words is "thirteen million, nine hundred thirty-eight thousand, nineteen".