13820743 has 2 divisors, whose sum is σ = 13820744. Its totient is φ = 13820742.

The previous prime is 13820713. The next prime is 13820747. The reversal of 13820743 is 34702831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13820743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13820747) 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, 6910371 + 6910372.

It is an arithmetic number, because the mean of its divisors is an integer number (6910372).

Almost surely, 2^13820743 is an apocalyptic number.

13820743 is a deficient number, since it is larger than the sum of its proper divisors (1).

13820743 is an equidigital number, since it uses as much as digits as its factorization.

13820743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 13820743 is about 3717.6259897951. The cubic root of 13820743 is about 239.9811501399.

The spelling of 13820743 in words is "thirteen million, eight hundred twenty thousand, seven hundred forty-three".