1999363 has 2 divisors, whose sum is σ = 1999364. Its totient is φ = 1999362.

The previous prime is 1999343. The next prime is 1999379. The reversal of 1999363 is 3639991.

It is a strong prime.

It is an emirp because it is prime and its reverse (3639991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1999363 - 2⁵ = 1999331 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1999303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999681 + 999682.

It is an arithmetic number, because the mean of its divisors is an integer number (999682).

2^1999363 is an apocalyptic number.

1999363 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999363 is an equidigital number, since it uses as much as digits as its factorization.

1999363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39366, while the sum is 40.

The square root of 1999363 is about 1413.9883309278. The cubic root of 1999363 is about 125.9787274073.

The spelling of 1999363 in words is "one million, nine hundred ninety-nine thousand, three hundred sixty-three".