19968293 has 2 divisors, whose sum is σ = 19968294. Its totient is φ = 19968292.

The previous prime is 19968287. The next prime is 19968313. The reversal of 19968293 is 39286991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18164644 + 1803649 = 4262^2 + 1343^2 .

It is a cyclic number.

It is not a de Polignac number, because 19968293 - 2⁶ = 19968229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19968203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9984146 + 9984147.

It is an arithmetic number, because the mean of its divisors is an integer number (9984147).

Almost surely, 2^19968293 is an apocalyptic number.

It is an amenable number.

19968293 is a deficient number, since it is larger than the sum of its proper divisors (1).

19968293 is an equidigital number, since it uses as much as digits as its factorization.

19968293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 47.

The square root of 19968293 is about 4468.5895985199. The cubic root of 19968293 is about 271.2982423910.

The spelling of 19968293 in words is "nineteen million, nine hundred sixty-eight thousand, two hundred ninety-three".