1968403 has 2 divisors, whose sum is σ = 1968404. Its totient is φ = 1968402.

The previous prime is 1968401. The next prime is 1968427. The reversal of 1968403 is 3048691.

It is a weak prime.

It is an emirp because it is prime and its reverse (3048691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1968403 - 2¹ = 1968401 is a prime.

It is a super-2 number, since 2×1968403² = 7749220740818, which contains 22 as substring.

Together with 1968401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1968401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984201 + 984202.

It is an arithmetic number, because the mean of its divisors is an integer number (984202).

2^1968403 is an apocalyptic number.

1968403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1968403 is an equidigital number, since it uses as much as digits as its factorization.

1968403 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1968403 is about 1402.9978617232. The cubic root of 1968403 is about 125.3250844943.

The spelling of 1968403 in words is "one million, nine hundred sixty-eight thousand, four hundred three".