13819243 has 2 divisors, whose sum is σ = 13819244. Its totient is φ = 13819242.

The previous prime is 13819231. The next prime is 13819259. The reversal of 13819243 is 34291831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13819243 - 2⁹ = 13818731 is a prime.

It is a super-3 number, since 3×13819243³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (13819643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6909621 + 6909622.

It is an arithmetic number, because the mean of its divisors is an integer number (6909622).

Almost surely, 2^13819243 is an apocalyptic number.

13819243 is a deficient number, since it is larger than the sum of its proper divisors (1).

13819243 is an equidigital number, since it uses as much as digits as its factorization.

13819243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 13819243 is about 3717.4242426713. The cubic root of 13819243 is about 239.9724679065.

The spelling of 13819243 in words is "thirteen million, eight hundred nineteen thousand, two hundred forty-three".