19995343 has 2 divisors, whose sum is σ = 19995344. Its totient is φ = 19995342.

The previous prime is 19995329. The next prime is 19995347. The reversal of 19995343 is 34359991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19995343 - 2⁹ = 19994831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19995343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19995347) 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, 9997671 + 9997672.

It is an arithmetic number, because the mean of its divisors is an integer number (9997672).

Almost surely, 2^19995343 is an apocalyptic number.

19995343 is a deficient number, since it is larger than the sum of its proper divisors (1).

19995343 is an equidigital number, since it uses as much as digits as its factorization.

19995343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 43.

The square root of 19995343 is about 4471.6152562581. The cubic root of 19995343 is about 271.4206916193.

The spelling of 19995343 in words is "nineteen million, nine hundred ninety-five thousand, three hundred forty-three".