13875919 has 2 divisors, whose sum is σ = 13875920. Its totient is φ = 13875918.

The previous prime is 13875907. The next prime is 13875929. The reversal of 13875919 is 91957831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13875919 - 2¹⁹ = 13351631 is a prime.

It is a super-2 number, since 2×13875919² = 385082256189122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13875929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6937959 + 6937960.

It is an arithmetic number, because the mean of its divisors is an integer number (6937960).

Almost surely, 2^13875919 is an apocalyptic number.

13875919 is a deficient number, since it is larger than the sum of its proper divisors (1).

13875919 is an equidigital number, since it uses as much as digits as its factorization.

13875919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 43.

The square root of 13875919 is about 3725.0394628782. The cubic root of 13875919 is about 240.3000818150.

The spelling of 13875919 in words is "thirteen million, eight hundred seventy-five thousand, nine hundred nineteen".